feat: add link to how-to-edit-locally

src/options/views/edit.html

@@ -1,6 +1,7 @@
 <div class="edit flex flex-col fixed-full">
   <div class="frame-block">
     <div class="buttons pull-right">
+      <a class="mr-1" href="https://violentmonkey.github.io/2017/03/14/How-to-edit-scripts-with-your-favorite-editor/" target="_blank">How to edit locally?</a>
       <div v-dropdown>
         <button dropdown-toggle v-text="i18n('buttonCustomMeta')"></button>
         <div class="dropdown-menu">