Update sphinxlint/__main__.py

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

Author: rtobar

sphinxlint/__main__.py

@@ -63,7 +63,7 @@ def __call__(self, parser, namespace, values, option_string=None):
             setattr(namespace, self.dest, self._job_count(values))
 
         @staticmethod
-        def _job_count(values):
+        def job_count(values):
             if values == "auto":
                 return os.cpu_count()
             return max(int(values), 1)