Corrected error line 38 tabsController.js

Changed first letter of the first word in comment on line 38 to a capital letter to be consistent with other comments found in the file.

js/angular/controller/tabsController.js

@@ -35,7 +35,7 @@ function($scope, $element, $ionicHistory) {
       self.deselect(tab);
       //Try to select a new tab if we're removing a tab
       if (self.tabs.length === 1) {
-        //do nothing if there are no other tabs to select
+        //Do nothing if there are no other tabs to select
       } else {
         //Select previous tab if it's the last tab, else select next tab
         var newTabIndex = tabIndex === self.tabs.length - 1 ? tabIndex - 1 : tabIndex + 1;