doc: reduce likelihood of mismerges during release

Switch to the `patience` git diff algorithm to reduce the likelihood of
mismerges when the release commit is cherry-picked to the `main` branch.

Refs: nodejs/Release#771 (comment)

Author: richardlau

Diff for: doc/contributing/releases.md

@@ -710,7 +710,7 @@ repository.
 ```console
 $ git checkout main
 $ git pull upstream main
-$ git cherry-pick v1.x^
+$ git cherry-pick --strategy-option=diff-algorithm=patience v1.x^
 ```
 
 Git should stop to let you fix conflicts.