[spinx] Declare our extension as safe for parallel reading

Author: Pierre-Sassoulas

doc/exts/pylint_features.py

@@ -40,9 +40,9 @@ def builder_inited(app: Sphinx | None) -> None:
         print_full_documentation(linter, stream, False)
 
 
-def setup(app: Sphinx) -> dict[str, str]:
+def setup(app: Sphinx) -> dict[str, str | bool]:
     app.connect("builder-inited", builder_inited)
-    return {"version": sphinx.__display_version__}
+    return {"version": sphinx.__display_version__, "parallel_read_safe": True}
 
 
 if __name__ == "__main__":