Added new 'Training presentation' resource for managing facilities (#…

…1238)

**Story card:** https://app.clubhouse.io/simpledotorg/story/1022/new-resource-manage-facilities

## Because

CVHOs need access to existing documentation to manage facilities on the Dashboard.

## This addresses

Adds a new section to the "Training presentations" card in the "Resources" section

app/views/resources/index.html.erb

@@ -45,6 +45,13 @@
                             <i class="fas fa-chalkboard-teacher"></i>
                         </a>
                     </div>
+                    <div class="resource-link resource-presentation">
+                        <a href="https://docs.google.com/presentation/d/1G3YEqGID5O9sPsHW_rSemr37i-kDLfDD-pKm0XxBrh0/edit#slide=id.g7da453f218_0_0" class="resource-url">
+                            Manage facilities on the Dashboard
+                            <span>Use this presentation to learn how to add, edit, and delete facilities on the Dashboard.</span>
+                            <i class="fas fa-chalkboard-teacher"></i>
+                        </a>
+                    </div>