minor #14536 Enhancement: Add new rule "string_replacement" (OskarStark)

This PR was merged into the 4.4 branch.

Discussion
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Enhancement: Add new rule "string_replacement"

❗ blocked by #14529

Commits
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7b5bb01 Enhancement: Add new rule "string_replacement"

Author: OskarStark

.doctor-rst.yaml

@@ -34,6 +34,7 @@ rules:
     short_array_syntax: ~
     space_between_label_and_link_in_doc: ~
     space_between_label_and_link_in_ref: ~
+    string_replacement: ~
     typo: ~
     unused_links: ~
     use_deprecated_directive_instead_of_versionadded: ~