Fix typo

Co-authored-by: Marci W <[email protected]>

Author: leemthompo

docs/syntax/links.md

@@ -43,7 +43,7 @@ Link to sections within the same document using heading anchors prefixed with `#
 [Jump to the next section](#next-section-anchor)
 ```
 
-Headings will automatically create anchor links in the resulting HTML. The are automatically generated by:
+Headings will automatically create anchor links in the resulting HTML. They are automatically generated by:
 
 - Converting to lowercase
 - Replacing spaces with hyphens