docs: Use numbered list for env setup in Contribution Guide #4463

Job	Run time
Compile Native Binaries (linux-x64)	1m 19s
Compile Native Binaries (linux-arm)	4m 55s
Compile Native Binaries (macos-x64)	4m 27s
Compile Native Binaries (macos-arm)	2m 7s
Compile Native Binaries (windows-x64)	5m 29s
Build Docs / Build Docs	4m 54s
Lint and Prune / Lint and Prune	2m 24s
Stress Tests (No Reuse V8 Context) / stress-test	11m 38s
Features Tests / test	7m 4s
Stress Tests (Reuse V8 Context) / stress-test	8m 43s
Run Integration Tests (linux-x64, Node 18, Reuse V8 Context false)	7m 29s
Run Integration Tests (linux-arm, Node 18, Reuse V8 Context true)	9m 7s
Run Integration Tests (macos-x64, Node 18, Reuse V8 Context true)	10m 29s
Run Integration Tests (macos-arm, Node 18, Reuse V8 Context true)	6m 15s
Run Integration Tests (windows-x64, Node 18, Reuse V8 Context true)	9m 48s
Run Integration Tests (linux-x64, Node 22, Reuse V8 Context false)	7m 14s
Run Integration Tests (linux-arm, Node 22, Reuse V8 Context true)	9m 5s
Run Integration Tests (macos-x64, Node 22, Reuse V8 Context true)	10m 51s
Run Integration Tests (macos-arm, Node 22, Reuse V8 Context true)	6m 27s
Run Integration Tests (windows-x64, Node 22, Reuse V8 Context true)	9m 30s
	2h 19m 15s

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