Add PR Link to CHANGELOG

CHANGELOG.md

@@ -87,7 +87,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 Then consult with [the template's build scripts](./templates/ctl-scaffold/esbuild/) - also see the new [Makefile](./templates/ctl-scaffold/Makefile) setup and [NPM scripts](./templates/ctl-scaffold/package.json).
 
-- Sharing wallets between Plutip tests
+- Sharing wallets between Plutip tests ([#1585](https://github.com/Plutonomicon/cardano-transaction-lib/pull/1585))
   - `runPlutipTestPlan` is a new function that executes a `ContractTestPlan`.
   - `groupContractTestPlan` is a new function that uses `Mote.Monad.group` to combine `ContractTestPlan`s.
   - `sameWallets` is a new function that creates a `ContractTestPlan` from a `UtxoDistribution` and a `TestPlanM` of the same wallets running different `Contract`s.