Merge pull request #7522 from garrettthomaskth/patch-1

Fix "A xfail" typo

Author: bluetech

doc/en/skipping.rst

@@ -14,7 +14,7 @@ otherwise pytest should skip running the test altogether. Common examples are sk
 windows-only tests on non-windows platforms, or skipping tests that depend on an external
 resource which is not available at the moment (for example a database).
 
-A **xfail** means that you expect a test to fail for some reason.
+An **xfail** means that you expect a test to fail for some reason.
 A common example is a test for a feature not yet implemented, or a bug not yet fixed.
 When a test passes despite being expected to fail (marked with ``pytest.mark.xfail``),
 it's an **xpass** and will be reported in the test summary.