reformat errors and try and match the new one about loop_factory existing

Author: Vizonex

tests/markers/test_invalid_arguments.py

@@ -61,7 +61,8 @@ async def test_anything():
     result.assert_outcomes(errors=1)
     result.stdout.fnmatch_lines(
         [
-            "*ValueError: mark.asyncio accepts only keyword arguments 'loop_scope', 'loop_factory'*"
+            "*ValueError: mark.asyncio accepts only a keyword arguments "
+            "'loop_scope' or 'loop_factory'*"
         ]
     )
 
@@ -84,6 +85,7 @@ async def test_anything():
     result.assert_outcomes(errors=1)
     result.stdout.fnmatch_lines(
         [
-            "*ValueError: mark.asyncio accepts only keyword arguments 'loop_scope', 'loop_factory'*"
+            "*ValueError: mark.asyncio accepts only a keyword arguments "
+            "'loop_scope' or 'loop_factory'*"
         ]
     )

tests/modes/test_strict_mode.py

@@ -163,10 +163,7 @@ async def test_anything(any_fixture):
     result.stdout.fnmatch_lines(
         [
             "*warnings summary*",
-            (
-                "test_strict_mode_marked_test_unmarked_fixture_warning.py::"
-                "test_anything"
-            ),
+            ("test_strict_mode_marked_test_unmarked_fixture_warning.py::test_anything"),
             (
                 "*/pytest_asyncio/plugin.py:*: PytestDeprecationWarning: "
                 "asyncio test 'test_anything' requested async "