diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index 9bd714f60..a50a695ee 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -858,10 +858,10 @@ def _token_type(token):
     if token.startswith(" ") or token.endswith(" "):
         type_ = "delimiter"
     elif (
-            token.isnumeric()
-            or (token.startswith("{") and token.endswith("}"))
-            or (token.startswith('"') and token.endswith('"'))
-            or (token.startswith("'") and token.endswith("'"))
+            token.isnumeric() or
+            (token.startswith("{") and token.endswith("}")) or
+            (token.startswith('"') and token.endswith('"')) or
+            (token.startswith("'") and token.endswith("'"))
     ):
         type_ = "literal"
     elif token.startswith("{"):