Merge pull request #22891 from rewolf

* pr/22891:
  Polish contribution
  Polish CONTRIBUTING.md

Author: snicoll

CONTRIBUTING.md

@@ -83,9 +83,8 @@ multiple edits or corrections of the same logical change. See
 [Rewriting History section of Pro Git](https://git-scm.com/book/en/Git-Tools-Rewriting-History)
 for an overview of streamlining commit history.
 
-1. Format commit messages using 55 characters for the subject line, 72 lines for the
-description, followed by the issue fixed, e.g. `Fixes #22276`.
-See the
+1. Format commit messages using 55 characters for the subject line, 72 characters per line
+for the description, followed by the issue fixed, e.g. `Fixes #22276`. See the
 [Commit Guidelines section of Pro Git](https://git-scm.com/book/en/Distributed-Git-Contributing-to-a-Project#Commit-Guidelines)
 for best practices around commit messages and use `git log` to see some examples.