Add description from David

src/app/components/launch-analysis/launch-analysis.component.html

@@ -109,7 +109,8 @@
       <div *ngIf="algorithm==='degree'">
         <p class="help info"><span class="icon"><i class="fa fa-info"></i></span>
           <a href="https://en.wikipedia.org/wiki/Centrality#Degree_centrality" target="_blank">Degree Centrality</a>
-          assigns an importance score based simply on the number of links held by each node.
+          assigns an importance score based simply on the number of links held by each node. In CoVex, we use a modified
+          version which does not consider all links but only the neighbouring seeds.
         </p>
         <div class="field" *ngIf="target === 'drug'">
           <label class="label">Non-approved Drugs</label>
@@ -185,7 +186,8 @@
           Launch
         </span>
       </button>
-      <button (click)="close()" class="button is-rounded has-tooltip" data-tooltip="Close the current window.">Close</button>
+      <button (click)="close()" class="button is-rounded has-tooltip" data-tooltip="Close the current window.">Close
+      </button>
     </footer>
   </div>
 </div>