Fix several Liquid string quoting issues

# Conflicts:
#	_includes/base/top_nav.html
#	permalinks/home.html

_includes/base/styles.html

@@ -1,5 +1,5 @@
 <!-- Custom styles for this template -->
-<link href={{ "styles.css" | absolute_url }}  rel="stylesheet">
+<link href="{{ 'styles.css' | absolute_url }}"  rel="stylesheet">
 
 <!-- Custom fonts for this template -->
 <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">

_includes/base/top_nav.html

@@ -2,7 +2,7 @@
 <nav class="navbar sticky-top navbar-light flex-md-nowrap docsite-header">
   <div class="container-fluid">
     <a class="navbar-brand" href="{{ site.baseurl }}/">
-      <img src={{ "/images/tsdoc-white.svg" | absolute_url }}
+      <img src="{{ '/images/tsdoc-white.svg' | absolute_url }}"
             style="height: 40px" alt="TSDoc" title="TSDoc" />
     </a>
     <div>