Use Doctor RST 1.41.0 and new rule

Author: MrYamous

.doctor-rst.yaml

@@ -47,6 +47,7 @@ rules:
     space_between_label_and_link_in_doc: ~
     space_between_label_and_link_in_ref: ~
     string_replacement: ~
+    title_underline_length_must_match_title_length: ~
     typo: ~
     unused_links: ~
     use_deprecated_directive_instead_of_versionadded: ~

.github/workflows/ci.yaml

@@ -73,7 +73,7 @@ jobs:
                     key: ${{ runner.os }}-doctor-rst-${{ steps.extract_base_branch.outputs.branch }}
 
             -   name: "Run DOCtor-RST"
-                uses: docker://oskarstark/doctor-rst:1.40.1
+                uses: docker://oskarstark/doctor-rst:1.41.0
                 with:
                     args: --short --error-format=github --cache-file=/github/workspace/.cache/doctor-rst.cache