Allow to ignore rstcheck errors. (#75405)

(cherry picked from commit 46819a65fa)

changelogs/fragments/ansible-test-rstcheck-ignore.yml

@@ -0,0 +1,2 @@
+bugfixes:
+- "ansible-test - allow to ignore ``rstcheck`` errors (https://github.com/ansible/ansible/pull/75272)."

test/lib/ansible_test/_internal/sanity/rstcheck.py

@@ -87,7 +87,7 @@ class RstcheckTest(SanitySingleVersion):
             level=r['level'],
         ) for r in results]
 
-        settings.process_errors(results, paths)
+        results = settings.process_errors(results, paths)
 
         if results:
             return SanityFailure(self.name, messages=results)