Added OpenPlains to the Commerial Support page (#412)

* Added OpenPlains

* fix typos

Co-authored-by: Veronica Andreo <veroandreo@gmail.com>

---------

Co-authored-by: Corey White <ctwhite48@gmail.com>
Co-authored-by: Markus Neteler <markus@neteler.org>
Co-authored-by: Veronica Andreo <veroandreo@gmail.com>

themes/grass/layouts/support/commercial.html

@@ -67,6 +67,17 @@ <h3 class="mt-2 mb-2">Kan Territory & IT</h3>
                   </div>
                 </div>
              </div>
+
+             <div class="section bg-white mb-4">
+              <div class="row nm">
+                <div class="col-4 text-center"><img src="{{.Site.BaseURL}}/images/logos/openplains-logo.png" style="float:center;padding-top:20px;"></div>
+                  <div class="col-8">
+                    <h3 class="mt-2 mb-2">OpenPlains Inc.</h3>
+                      <p>OpenPlains Inc. provides the best decision making tools through the development of intuitive interactive geospatial modeling applications. Let us help you put your GRASS GIS models into production.</p>
+                      <a class="btn btn-primary" href="https://openplains.com/" target="_blank">Visit our website</a>
+                  </div>
+                </div>
+             </div>
 
           <div class="row">
           </div>