Commit Message line length is 72 characters (#333)

See step 3 in https://docs.typo3.org/m/typo3/guide-contributionworkflow/main/en-us/BugfixingAZ/Index.html#fix-the-code

And also Gerrit code base - CSS:
```css
.commitMessage {
  max-width: calc(72ch + 2px + 2 * var(--spacing-m) + 0.4px);
}
```

Documentation/Appendix/CommitMessage.rst

@@ -25,7 +25,7 @@ Here is an example of a final commit message. The change-id will be generated by
    and not what is has not been working
    (that is part of the bug report already).
 
-   More detailed explanatory text, if necessary. Wrap it to 74 characters.
+   More detailed explanatory text, if necessary. Wrap it to 72 characters.
    The first line is treated as the subject of the commit message and
    the rest of the text as the body.  The blank line separating the
    subject from the body is critical (unless you omit the body entirely);
@@ -43,8 +43,8 @@ Here is an example of a final commit message. The change-id will be generated by
    The commit message solely describes '''what is changed'''.
 
    * Bullet points are okay, too
-   * An asterisk (`*`) is used for the bullet, it can be followed by a single
-     space. This format is rendered correctly by Forge (redmine)
+   * An asterisk (`*`) is used for the bullet, it can be followed by a
+     single space. This format is rendered correctly by Forge (redmine)
    * Use a hanging indent
 
    Resolves: #12346