fix: remove incorrect favicon and replace with rocket

_includes/head.html

@@ -12,7 +12,6 @@
   {% if page.description %}
     <meta name="description" content="{{ page.description }}">
   {% endif %}
-  <link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ site.baseurl }}/public/apple-touch-icon-precomposed.png">
   <link rel="shortcut icon" href="{{ site.baseurl }}/public/favicon.ico">
   <link rel="alternate" type="application/atom+xml" title="{{ site.title }}" href="{{ site.baseurl }}/atom.xml">
   <style>html,body{background:#fffaf7;color:#2d2d2d;font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";}a,a:visited{color:darkred;text-decoration:none;}a:hover{text-decoration:underline;}main{margin:auto;max-width:38rem;padding:0.8rem;}pre{background:white;overflow:scroll;padding:1rem;}td{border:1px solid #2d2d2d;padding:10px;}img{max-width:100%;}</style>