Add type annotation

Author: TLouf

sphinx/domains/python.py

@@ -251,7 +251,7 @@ def _unparse_pep_604_annotation(node: ast.Subscript) -> list[Node]:
 
 
 def _parse_arglist(
-    arglist: str, env: BuildEnvironment | None = None, multiline=False
+    arglist: str, env: BuildEnvironment | None = None, multiline: bool = False
 ) -> addnodes.desc_parameterlist:
     """Parse a list of arguments using AST parser"""
     params = addnodes.desc_parameterlist()