typo in error message (#11166)

[skip ci]

Author: kkotenko

py/conftest.py

@@ -83,7 +83,7 @@ def driver(request):
     # skip tests if not available on the platform
     _platform = platform.system()
     if driver_class == "Safari" and _platform != "Darwin":
-        pytest.skip("Safari tests can only rn on an Apple OS")
+        pytest.skip("Safari tests can only run on an Apple OS")
     if (driver_class == "Ie") and _platform != "Windows":
         pytest.skip("IE and EdgeHTML Tests can only run on Windows")
     if "WebKit" in driver_class and _platform != "Linux":