Merge branch 'pr-bend' of github.com:adhooge/music21 into pr-bend

Author: adhooge

CONTRIBUTING.md

@@ -5,6 +5,14 @@ documentation improvements. The
 Information that was formerly here is now in 
 [Developer Reference](https://www.music21.org/music21docs/developerReference/index.html)
 
+Pull requests or issues created with AI or in other ways not directly authored by the
+contributor must be declared with (AI) or (AI Generated) in their issue/PR titles.
+If not accepted, they will generally be closed without comment unless the contributor has
+a demonstrated track record of being able to fix the code in question.  Reviewers that
+do not disclose AI usage will be politely reminded the first time and may be blocked
+for subsequent lack of disclosure. (New in 2025: this
+is a pre-emptive time savings from experiences on other Open Source projects.)
+
 ## Resources ##
 
 [Module Documentation and User's Guide](https://www.music21.org/music21docs/)

documentation/source/usersGuide/usersGuide_07_chords.ipynb

@@ -526,7 +526,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "You can find the third and fifth of the `Chord` with .third and .fifth.  Note that these properties do not have `()` after them.  This was a mistake in how we created `music21` and hopefully this will all be fixed and consistent soon:"
+    "You can find the third and fifth of the `Chord` with `.third` and `.fifth`.  Note that these properties do not have `()` after them.  This was a mistake in how we created `music21` and hopefully this will all be fixed and consistent soon:"
    ]
   },
   {