Fixed some tox errors in docs

Two lines that where too long and on trailing
whitespace.

Closes-Bug: #1669305
Change-Id: I4dda1a27feab4d66af6d35690ede025e8d7607c8

doc/CONTRIBUTING.rst

@@ -7,8 +7,8 @@ How To Contribute
 Basics
 ======
 
-#. Our source code is hosted on `OpenStack Kolla-Ansible Git`_. Bugs should be filed on
-   launchpad_.
+#. Our source code is hosted on `OpenStack Kolla-Ansible Git`_. Bugs should be
+   filed on launchpad_.
 
 #. Please follow OpenStack `Gerrit Workflow`_ to contribute to Kolla.
 

doc/production-architecture-guide.rst

@@ -54,7 +54,7 @@ In Kolla operators should configure following network interfaces:
 
 * ``storage_interface`` - This is the interface that is used by virtual
   machines to communicate to Ceph. This can be heavily utilized so it's
-  recommended to put this network on 10Gig networking. Defaults to 
+  recommended to put this network on 10Gig networking. Defaults to
   ``network_interface``.
 
 * ``cluster_interface`` - This is another interface used by Ceph. It's used for

doc/quickstart.rst

@@ -346,8 +346,8 @@ Copy the configuration files globals.yml and passwords.yml to /etc directory.
     cp -r /usr/local/share/kolla-ansible/etc_examples/kolla /etc/kolla/
 
 The inventory files (all-in-one and multinode) are located in
-/usr/local/share/kolla-ansible/ansible/inventory. Copy the configuration files to the
-current directory.
+/usr/local/share/kolla-ansible/ansible/inventory. Copy the configuration files
+to the current directory.
 
 ::