Merge pull request #154 from ember-learn/on-this-page-prefix

add prefixHeaderId to on-this-page links

Author: MinThaMie

addon/components/on-this-page.hbs

@@ -5,7 +5,7 @@
     <ul>
       {{#each @toc as |toc|}}
         <li>
-          <a href="#{{toc.id}}">{{toc.text}}</a>
+          <a href="#{{this.headerPrefix}}{{toc.id}}">{{toc.text}}</a>
         </li>
       {{/each}}
     </ul>

addon/components/on-this-page.js

@@ -0,0 +1,6 @@
+import Component from '@glimmer/component';
+import config from 'ember-get-config';
+
+export default class OnThisPageComponent extends Component {
+  headerPrefix = config?.showdown?.prefixHeaderId ?? '';
+}