Merge branch 'refer-to-omnibus-readme' into 'master'

Refer to omnibus readme

source/downloads/index.html

@@ -94,6 +94,11 @@ platforms:
                 Password: 5iveL!fe
               </p>
             </div>
+            <div class="tab-step">
+              <p>
+                For troubleshooting and configuration options please see the <a href="https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md">Omnibus GitLab readme</a>
+              </p>
+            </div>
           </div>
         {% endfor %}
         </div>

source/installation/index.html

@@ -11,17 +11,18 @@ suppress_header: true
     <div class="method">
       <h1>Installing GitLab</h1>
       <p>
-        There are many options to install GitLab. If you're not sure what to choose, please use the package installation method.
+        Below are themany options to install GitLab.
+        If you're not sure what to choose, please use the package installation method.
       </p>
     </div>
     <div class="method">
       <h2 id="#omnibus">Package installation (recommended)</h2>
       <p>
-        We recommend installing GitLab using our packages. These packages contain GitLab and all its depencies (Ruby, PostgreSQL, Redis, Nginx, Unicorn, etc.). They are made with <a href="https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md#installation">omnibus-gitlab that also contains the installation instructions for the package</a>.
+        We recommend installing GitLab using our packages. These packages contain GitLab and all its depencies (Ruby, PostgreSQL, Redis, Nginx, Unicorn, etc.).
       </p>
       <ul>
-        <li><p><a href="https://www.gitlab.com/downloads">Gitlab Community Edition packages</a></p></li>
+        <li><p><a href="/downloads">Gitlab Community Edition packages</a></p></li>
         <li><p><a href="https://gitlab.com/subscribers/gitlab-ee/blob/master/doc/install/packages.md">Gitlab Enterprise Edition packages</a> (subscribers only)</p></li>
       </ul>
     </div>