Update navbar.html

Author: dieghernan

inst/pkgdown/templates/navbar.html

@@ -2,7 +2,7 @@
 <nav class="navbar fixed-top navbar-light navbar-expand-lg bg-light">
   <div class="container">
   <a class="navbar-brand me-2" href="{{#site}}{{root}}{{/site}}index.html">
-    <img src="{{#site}}{{root}}{{/site}}logo.png" alt="{{#site}}{{title}}{{/site}} logo" height="40" class="d-inline-block me-1">{{#site}}{{title}}{{/site}}</a>
+    <img src="{{#site}}{{root}}{{/site}}apple-touch-icon-180x180.png" alt="{{#site}}{{title}}{{/site}} logo" height="40" class="d-inline-block me-1">{{#site}}{{title}}{{/site}}</a>
 
     <small class="nav-text {{#development}}text-{{version_label}}{{/development}} me-auto" data-bs-toggle="tooltip" data-bs-placement="bottom" title="{{#development}}{{version_tooltip}}{{/development}}">{{#package}}{{version}}{{/package}}</small>