[graph] fix term count for sidebar

It was reduced by 1 because the currently selected term was also
counted. Now the algorithm changed, so we don't need to subtract 1
anymore.

src/Gargantext/Components/GraphExplorer/Sidebar.purs

@@ -516,7 +516,7 @@ neighborhoodCpt = R.memo' $ here.component "neighborhood" cpt
       let neighbours' = SigmaxT.neighborsSortedByEdgeWeight graph' selectedNodeIds'
       let count = A.length neighbours'
 
-      T.write_ (count - 1) termCountBox
+      T.write_ count termCountBox
       T.write_ neighbours' termListBox
       T.write_ false showMoreBox