Merge pull request #374 from timgates42/bugfix/typo_usually

Fix simple typo: ussually -> usually

Author: oldani

requests_html.py

@@ -395,7 +395,7 @@ def attrs(self) -> _Attrs:
         if self._attrs is None:
             self._attrs = {k: v for k, v in self.element.items()}
 
-            # Split class and rel up, as there are ussually many of them:
+            # Split class and rel up, as there are usually many of them:
             for attr in ['class', 'rel']:
                 if attr in self._attrs:
                     self._attrs[attr] = tuple(self._attrs[attr].split())