Aggregate fix links

[brossetti1]

Aggregate pr to fix broken links

Description

correcting broken links described here, if/when this is approved, you will probably want to squash and merge.

this pr specifically deals with this part of the issue:

submit 1 pr across all the links using my best judgement where its obviously a bad link and easy to discern the correct link, ie project name/domain changed (ie matic network is now polygon), external doc link changed pathing (saw this with some chainlink urls/aave redesigned their landing page so broken link just 404s), removing links for projects that no longer exist that have no associated content with the link -- basically all the obvious easy cleanups in 1 pr.

fyi the waybackmachine is truly an amazing public good.. i dont think it would be possible to go through these in a reasonable way without it.

Related Issue

#14823 (comment)

Changes

Im splitting these changes into two secctions below, the first one is a list of changes that are probably not exact matches for the fixed links as in the waybackmachine content of the broken link does not totally match the fixed link in the pr and therefore should probably be double checked for feedback by whoever is checking the pr. the changed links section is pretty much a one to one content match when compared against the broken link in the waybackmachine.

each commit has changes per broken link and the commit message typically follows this format (with variations as looking back i wasnt as consistent as i should of been.. oops) - change [broken link] to [fixed link] - [options notes if available]

Aggregate PR should douoble check..

Broken Link	Fixed Link	Notes
goquorum.com	docs.goquorum.consensys.io	Consensys Acquires JPM Quorum - Needs double-checking
yeticoineth.com/about.html	Removed (dead project)	Archive: Wayback
ethercluster.com	etccooperative.github.io/ethercluster-website	Archive: Wayback
web3py.readthedocs.io/en/stable/examples.html#converting-currency-denominations	web3py.readthedocs.io/en/stable/troubleshooting.html#how-do-i-convert-currency-denominations
coindesk.com/breitling-arianee-all-new-watches-ethereum	coindesk.com/business/2020/10/15/breitling-goes-live-with-ethereum-based-system-to-put-all-new-watches-on-the-blockchain
thegraph.com/docs/network#overview	thegraph.com/docs/en/about/	Archive: Wayback - Graph docs updated, most probable replacement
docs.figment.io/introduction/what-is-datahub	figment-docs.gitbook.io/learn-docs/introduction/what-is-datahub	Looks like Figment updated their docs. Archive: Wayback - docs.figment.io/docs/welcome
cointool.app/approve/eth	Removed (dead domain)

Changed Links

Broken Link	Fixed Link	Notes
citydao.io	citizen.citydao.io
api.dclimate.net	dclimate.net
www.ethereum-magicians.org	ethereum-magicians.org	Potentially a bad DNS config (CNAME or A Record for WWW) at eth magicians
www.ethresear.ch	ethresear.ch	Potentially a bad DNS config (CNAME or A Record for WWW) at ethresear
www.unigrants.org	uniswapfoundation.org
www.xdaichain.com	gnosis.io
ethworks.io/assets/download/zero-knowledge-blockchain-scaling-ethworks.pdf	archblock.com/poland/assets/download/zero-knowledge-blockchain-scaling-ethworks.pdf
newsletter.banklesshq.com/p/the-essential-guide-to-arbitrum	bankless.com/the-essential-guide-to-arbitrum
treum.io	consensys.io/blog/consensys-acquires-treum
compoundgrants.org	compoundgrants.questbook.app	Proof: Tally Proposal
matic.network	polygon.technology
aave.com/flash-loans	aave.com/docs/concepts/flash-loans	Archive: Wayback
www.4byte.directory/x/?bytes4_signature=0x8ffb5c97	www.4byte.directory/signatures/?bytes4_signature=0x8ffb5c97
docs.zksync.io/zk-stack/concepts/data-availability	docs.zksync.io/zksync-protocol/rollup/data-availability
faucet.chainstack.com/sepolia-faucet	faucet.chainstack.com/sepolia-testnet-faucet
portal.thirdweb.com/solidity/	portal.thirdweb.com/contracts/build/overview
metamask.io/download.html	metamask.io/download	Just removed .html
balancergrants.notion.site	quark-ceres-740.notion.site	Change domain or unsubscribed to Notion
chainsafe.github.io/lodestar/usage/local/	chainsafe.github.io/lodestar/contribution/advanced-topics/setting-up-a-testnet#post-merge-local-testnet	Archive: Wayback
zeroknowledge.fm/episode-202-stateless-ethereum-verkle-tries-with-dankrad-feist/	zeroknowledge.fm/podcast/202/
en.wikipedia.org/wiki/Directed_acycle_graph	en.wikipedia.org/wiki/Directed_acyclic_graph	Fixed typo: "acycle" → "acyclic"
calendly.com/dan-trailofbits/ethereum-office-hours	calendly.com/dan-trailofbits/office-hours
my.ethswarm.org/grants	my.ethswarm.org/	Archive: Wayback - The old link now exists on the home page
apollographql.com/blog/graphql-explained-5844742f195e/	apollographql.com/blog/graphql-explained
thegraph.com/docs/define-a-subgraph#the-subgraph-manifest	thegraph.com/docs/en/subgraphs/developing/creating/subgraph-manifest/	Archive: Wayback
thegraph.com/docs/define-a-subgraph	thegraph.com/docs/en/subgraphs/developing/creating/starting-your-subgraph/	Archive: Wayback
apollographql.com/blog/apollo-client-now-with-react-hooks-676d116eeae2	apollographql.com/blog/apollo-client-now-with-react-hooks	ApolloGraphQL removed hashes from slug
uniswapfoundation.org/apply-for-a-grant	uniswapfoundation.org/opportunities
docs.nodereal.io/nodereal/meganode/introduction	docs.nodereal.io/docs/introduction	Archive: Wayback
optimism.io/apps/bridges	optimism.io/apps#bridge
community.optimism.io/docs/developers/bridge/standard-bridge	docs.optimism.io/app-developers/bridging/standard-bridge	Optimism redid their docs pages
coindesk.com/markets/2016/06/25/understanding-the-dao-attack/	coindesk.com/learn/understanding-the-dao-attack
nethermind.io/smart-contracts-audits	nethermind.io/smart-contract-audits	Potentially a bad DNS config (CNAME or A Record for WWW) at nethermind.io
coindesk.com/30-million-ether-reported-stolen-parity-wallet-breach	coindesk.com/markets/2017/07/19/30-million-ether-reported-stolen-due-to-parity-wallet-breach	Archive: Wayback
coindesk.com/learn/2016/06/25/understanding-the-dao-attack/	coindesk.com/learn/understanding-the-dao-attack
coindesk.com/tech/2021/04/20/4-ways-to-stay-safe-in-crypto/	coindesk.com/learn/4-ways-to-stay-safe-in-crypto	Archive: Wayback
docs.goquorum.com/en/latest/Privacy/Tessera/Tessera/	docs.goquorum.consensys.io/concepts/privacy#private-transaction-manager	GoQuorum was acquired by Consensys
docs.openzeppelin.com/contracts/4.x/wizard	docs.openzeppelin.com/contracts/5.x/wizard	4.x wizzard no longer available
coindesk.com/next-gen-buidlers-the-8-teams-working-on-ethereum-2-0	coindesk.com/markets/2018/12/09/8-teams-are-sprinting-to-build-the-next-generation-of-ethereum	Archive: Wayback
pinata.cloud/documentation#PinJSONToIPFS	docs.pinata.cloud/api-reference/endpoint/ipfs/pin-json-to-ipfs#pin-json	Pinata docs changed, but old link still goes to API reference. Archive: Wayback
https://pinata.cloud/signup	https://app.pinata.cloud/auth/signup