Internal change.

PiperOrigin-RevId: 885797832

Author: txtpbfmt-copybara-robot

docs/config.md

@@ -3,8 +3,9 @@
 <!--* freshness: { exempt: true } *-->
 
 `txtpbfmt` provides several configuration options that customize the specifics
-of the output format. These are configured by adding a comment line to top of
-the proto file (before the first non-empty non-comment line) of the form:
+of the output format. These are configured by adding a comment line to the top
+of the proto file (before the first non-empty non-comment line) or immediately
+preceding a specific field:
 
 `# txtpbfmt: [config-option]`