[Sync to prerelease] Fix YAML key from 'editors' to 'editor' (#2114)

(cherry picked from commit e0d79cf)

Co-authored-by: Xuefeng Xu <41134380+xuefeng-xu@users.noreply.github.com>

Author: github-actions[bot]

docs/authoring/create-citeable-articles.qmd

@@ -253,13 +253,13 @@ Quarto's approach to emitting scholarly metadata is to take the standard CSL fie
 [^2]: Specify one or more editors using one of the following:
 
     ``` yaml
-    editors: Norah Jones
+    editor: Norah Jones
     ```
 
     or multiple values like:
 
     ``` yaml
-    editors:
+    editor:
     -   Norah Jones
     -   Nick Fury
     ```