!fixup from review

Author: RonnyPfannschmidt

changelog/8508.improvement.rst

@@ -1,2 +1,2 @@
 Introduce multiline display for warning matching  via :py:func:`pytest.warns` and
-enhance match comparison for :py:func:`_pytest._code.ExceptionInfo.match` as returned by :py:func:`pytest.raises`.
+enhance match comparison for :py:func:`pytest.ExceptionInfo.match` as returned by :py:func:`pytest.raises`.

src/_pytest/recwarn.py

@@ -279,7 +279,7 @@ def found_str():
                 if not any(issubclass(r.category, self.expected_warning) for r in self):
                     __tracebackhide__ = True
                     fail(
-                        f"DID NOT WARN. No warnings of type {self.expected_warning} were emitted. \n"
+                        f"DID NOT WARN. No warnings of type {self.expected_warning} were emitted.\n"
                         f"The list of emitted warnings is: {found_str()}."
                     )
                 elif self.match_expr is not None:

testing/test_recwarn.py

@@ -262,23 +262,23 @@ def test_as_contextmanager(self) -> None:
             with pytest.warns(RuntimeWarning):
                 warnings.warn("user", UserWarning)
         excinfo.match(
-            r"DID NOT WARN. No warnings of type \(.+RuntimeWarning.+,\) were emitted. \n"
+            r"DID NOT WARN. No warnings of type \(.+RuntimeWarning.+,\) were emitted.\n"
             r"The list of emitted warnings is: \[UserWarning\('user',?\)\]."
         )
 
         with pytest.raises(pytest.fail.Exception) as excinfo:
             with pytest.warns(UserWarning):
                 warnings.warn("runtime", RuntimeWarning)
         excinfo.match(
-            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted. \n"
+            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted.\n"
             r"The list of emitted warnings is: \[RuntimeWarning\('runtime',?\)]."
         )
 
         with pytest.raises(pytest.fail.Exception) as excinfo:
             with pytest.warns(UserWarning):
                 pass
         excinfo.match(
-            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted. \n"
+            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted.\n"
             r"The list of emitted warnings is: \[\]."
         )
 
@@ -290,7 +290,7 @@ def test_as_contextmanager(self) -> None:
 
         messages = [each.message for each in warninfo]
         expected_str = (
-            f"DID NOT WARN. No warnings of type {warning_classes} were emitted. \n"
+            f"DID NOT WARN. No warnings of type {warning_classes} were emitted.\n"
             f"The list of emitted warnings is: {messages}."
         )