[doc] Fix compatability -> compatibility

Change-Id: I55387dbb5999546955cb30dc7a8d6e6b63bc2129

doc/source/admin/index.rst

@@ -31,6 +31,6 @@ the major upgrades procedures.
    monitoring-systems.rst
    backup-restore.rst
    troubleshooting.rst
-   upgrades/compatability-matrix.rst
+   upgrades/compatibility-matrix.rst
    upgrades/minor-upgrades.rst
    upgrades/major-upgrades.rst

doc/source/admin/upgrades/compatibility-matrix.rst

@@ -1,7 +1,7 @@
-Compatability Matrix
+Compatibility Matrix
 --------------------
 
-All of the OpenStack-Ansible releases are compatable with specific sets of
+All of the OpenStack-Ansible releases are compatible with specific sets of
 operating systems and their versions. Operating Systems have their own
 lifecycles, however we may drop their support before end of their EOL because
 of various reasons:
@@ -21,4 +21,4 @@ Below you will find the support matrix of Operating Systems for
 OpenStack-Ansible releases.
 
 .. raw:: html
-    :file: os-compatability-matrix.html
+    :file: os-compatibility-matrix.html

doc/source/admin/upgrades/os-compatibility-matrix.html

@@ -1,4 +1,4 @@
-<h3>Operating System Compatability Matrix</h3>
+<h3>Operating System Compatibility Matrix</h3>
 <table class="table table-bordered text-center" >
     <tr>
         <th colspan="2" rowspan="3" class="text-center active" style="vertical-align: middle">OpenStack Releases</th>