Fix grammar error in Pull request workflow (#6039)

Co-authored-by: Hugo Locurcio <[email protected]>

community/contributing/pr_workflow.rst

@@ -399,8 +399,8 @@ However, be aware that in our PR workflow, we favor commits that bring the
 codebase from one functional state to another functional state, without having
 intermediate commits fixing up bugs in your own code or style issues. Most of
 the time, we will prefer a single commit in a given PR (unless there's a good
-reason to keep the changes separate), so instead of authoring a new commit,
-considering using ``git commit --amend`` to amend the previous commit with your
+reason to keep the changes separate). Instead of authoring a new commit,
+consider using ``git commit --amend`` to amend the previous commit with your
 fixes. The above example would then become:
 
 ::