docs: Fix typos

Author: jwilk

docs/_templates/sidebarintro.html

@@ -40,7 +40,7 @@ <h3>Translations</h3>
 
 <h3>Useful Links</h3>
 <ul>
-  <li><a href="http://docs.python-requests.org/en/latest/community/recommended/">Recomended Packages and Extensions</a></li>
+  <li><a href="http://docs.python-requests.org/en/latest/community/recommended/">Recommended Packages and Extensions</a></li>
 
   <p></p>
 

docs/user/advanced.rst

@@ -69,7 +69,7 @@ Sessions can also be used as context managers::
         s.get('http://httpbin.org/cookies/set/sessioncookie/123456789')
 
 This will make sure the session is closed as soon as the ``with`` block is
-exited, even if unhandled exceptions occured.
+exited, even if unhandled exceptions occurred.
 
 
 .. admonition:: Remove a Value From a Dict Parameter