[Chapel Merge] Fix a docs build error

Branch: refs/heads/main
Revision: 99b7dd9
Author: mppf
Link: Unavailable
Log Message:

Merge pull request #18635 from mppf/nitpick-ignore-fix

Fix a docs build error

Fixes a docs build error from PR #18619

Reviewed by @dlongnecke-cray

Modified Files:
M doc/util/nitpick_ignore

Compare: https://github.com/chapel-lang/chapel/compare/458718de340d...99b7dd9a80ea