DEV: Add plugin outlet to about.hbs (#29582)

* DEV: Add plugin outlet to about.hbs

* linter issues

* removed unintended code

app/assets/javascripts/discourse/app/templates/about.hbs

@@ -1,13 +1,18 @@
-{{body-class "about-page"}}
+<PluginOutlet
+  @name="about-wrapper"
+  @outletArgs={{hash model=this.model contactInfo=this.contactInfo}}
+>
+  {{body-class "about-page"}}
 
-<section>
+  <section>
     <div class="container">
       <div class="contents clearfix body-page">
 
         <ul class="nav-pills">
-        <li class="nav-item-about"><LinkTo @route="about" class="active">{{i18n
-              "about.simple_title"
-            }}</LinkTo></li>
+          <li class="nav-item-about"><LinkTo
+              @route="about"
+              class="active"
+            >{{i18n "about.simple_title"}}</LinkTo></li>
           {{#if this.faqOverridden}}
             <li class="nav-item-guidelines"><LinkTo @route="guidelines">{{i18n
                   "guidelines"
@@ -38,4 +43,5 @@
         <AboutPage @model={{this.model}} />
       </div>
     </div>
-</section>
+  </section>
+</PluginOutlet>