change a comment in the css file apporopliately

src/client/styles/scss/_page_accessaries_modal.scss

@@ -9,7 +9,8 @@
     max-width: 1140px;
     max-height: 595px;
   }
-  // revision-history on pageAccsesoriesModal
+
+  // revision-history diff
   .d2h-code-side-linenumber {
     position: static;
     display: table-cell;