minor #21630 Fix CI (OskarStark)

This PR was merged into the 8.0 branch.

Discussion
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 Fix CI

Commits
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d2b4c3e Fix CI

Author: OskarStark

.doctor-rst.yaml

@@ -28,6 +28,7 @@ rules:
         ignored_namespaces:
             - '/^Acme/'
             - '/^Shared/'
+            - '/^Symfony/'
         ignored_paths:
             - '/^config\//'
             - '/^example\.com\//'