Update ignore rule

There is a new, more specific rule, that we want to ignore instead of
the more general "misc".

Signed-off-by: Leandro Lucarella <luca-frequenz@llucax.com>

Author: llucax

docs/_scripts/macros.py

@@ -35,7 +35,7 @@ def _get_docstring(symbol: str) -> str:
         return docstring.value
 
     # The decorator makes the function untyped
-    @env.macro  # type: ignore[misc]
+    @env.macro  # type: ignore[untyped-decorator]
     def docstring_summary(symbol: str) -> str:
         """Get the summary of a Python symbol.