docs(github): support for various file extensions (#250)

docs/components/docs/DocsPageHeader.vue

@@ -22,7 +22,7 @@
           label="GitHub"
           icon="i-simple-icons-github"
           color="white"
-          :to="`https://github.com/nuxtlabs/ui/blob/dev/src/runtime/components/${page._dir}/${page.title.replace(' ', '')}.vue`"
+          :to="`https://github.com/nuxtlabs/ui/blob/dev/src/runtime/components/${page._dir}/${page.title.replace(' ', '')}${page.github.suffix || '.vue'}`"
         />
       </div>
     </div>

docs/content/3.forms/8.form-group.md

@@ -1,5 +1,6 @@
 ---
-github: true
+github: 
+  suffix: .ts
 description: Display a label and additional informations around a form element.
 ---