change page title, add unique title tag

install.html

@@ -31,7 +31,7 @@
   </div>
   <div class="mw-1024 mx-auto of-hidden my-48">
     <div class="p-16 o-h">
-      <div class="f-size-26 pb-10 mb-16 px-12 t-center">Twister Installation Guide</div>
+      <div class="f-size-26 pb-10 mb-16 px-12 t-center">Quick Start Guide</div>
       <div class="my-36 p-16 b-c-4 b-2">
         <i class="bi-info-circle mr-6 f-size-26 float-right p-16 c-0"></i>
         <p class="c-0">