[3.13] gh-133210: Fix test_pydoc without docstrings (GH-139654) (#139666)

gh-133210: Fix `test_pydoc` without docstrings (GH-139654)
(cherry picked from commit 708de26)

Co-authored-by: Mikhail Efimov <[email protected]>

Author: miss-islington

Lib/test/test_pydoc/test_pydoc.py

@@ -1930,7 +1930,7 @@ def test_text_doc_routines_in_class(self, cls=pydocfodder.B):
         else:
             self.assertIn(' |  get(...) method of builtins.dict instance', lines)
             self.assertIn(' |  dict_get = get(...) method of builtins.dict instance', lines)
-            self.assertIn(' |  sin(...)', lines)
+            self.assertIn(' |  sin(object, /)', lines)
 
         lines = self.getsection(result, f' |  Class methods {where}:', ' |  ' + '-'*70)
         self.assertIn(' |  B_classmethod(x)', lines)
@@ -2020,7 +2020,7 @@ def test_text_doc_routines_in_module(self):
         if not support.MISSING_C_DOCSTRINGS:
             self.assertIn('    sin(x, /)', lines)
         else:
-            self.assertIn('    sin(...)', lines)
+            self.assertIn('    sin(object, /)', lines)
 
     def test_html_doc_routines_in_module(self):
         doc = pydoc.HTMLDoc()
@@ -2065,7 +2065,7 @@ def test_html_doc_routines_in_module(self):
         if not support.MISSING_C_DOCSTRINGS:
             self.assertIn(' sin(x, /)', lines)
         else:
-            self.assertIn(' sin(...)', lines)
+            self.assertIn(' sin(object, /)', lines)
 
 
 @unittest.skipIf(