[minor] fixed editor icons

frappe/public/js/frappe/ui/editor.html

@@ -60,10 +60,10 @@
 				<i class="icon-align-center"></i></a>
 			<a class="btn btn-default btn-small" data-edit="outdent"
                 title="{{ __("Reduce indent (Shift+Tab)") }}">
-				<i class="octicon octicon-move-left"></i></a>
+				<i class="icon-indent-left"></i></a>
 			<a class="btn btn-default btn-small" data-edit="indent"
                 title="{{ __("Indent (Tab)") }}">
-                <i class="octicon octicon-move-right"></i></a>
+                <i class="icon-indent-right"></i></a>
             <a class="btn btn-default btn-small"
                 data-edit="insertHorizontalRule"
                 title="{{ __("Horizontal Line Break") }}">