Docs for request without timeout has dead link (#925)

The see also section refers to an invalid URL. This change updates
with the latest known reference.

Signed-off-by: Eric Brown <eric_wade_brown@yahoo.com>

bandit/plugins/request_without_timeout.py

@@ -38,7 +38,7 @@
 
 .. seealso::
 
- - https://2.python-requests.org/en/master/user/quickstart/#timeouts
+ - https://requests.readthedocs.io/en/latest/user/advanced/#timeouts
 
 .. versionadded:: 1.7.5