Enhanced simulateTransaction Documentation (#666)

* Enhanced `simulateTransaction` Documentation

This update attempts to improve the documentation for the `simulateTransaction` endpoint in Soroban RPC, and a deeper look at both the RPC method and SDK methods that implement it.

* format mdx

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: George <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: George <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: George <[email protected]>

* resolve some issues

* resolve issue

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* Update docs/smart-contracts/guides/transactions/simulateTransaction-Deep-Dive.mdx

Co-authored-by: Julian Martinez <[email protected]>

* add rpc server links and fix js

* Fix js example

* Apply suggestions from code review

Co-authored-by: George <[email protected]>
Co-authored-by: Julian Martinez <[email protected]>

* resolve review concerns

* SorobanRpc not rpc

* fix js

* formatting

* nit: link formatting

* add instructions for example

* Add title

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Co-authored-by: George <[email protected]>
Co-authored-by: Julian Martinez <[email protected]>
Co-authored-by: Julian Martinez <[email protected]>
Co-authored-by: Bri <[email protected]>