Update doc/devel/contribute.rst

Co-authored-by: Ruth Comer <10599679+rcomer@users.noreply.github.com>

Author: timhoffm

doc/devel/contribute.rst

@@ -216,7 +216,7 @@ Some examples of acceptable and unacceptable AI uses are:
     - Solving topics that you wouldn't be able to solve yourself without AI
     - Using AI output without ensuring that you fully understand the output or
       without verifying that it is the correct approach.
-    - Increase breadth of contributions, i.e. simultaneously contributing to several
+    - Increasing breadth of contributions, i.e. simultaneously contributing to several
       projects. Instead of spreading your resources, you can provide greater value
       by engaging more deeply with one or two projects.