Fix: remove extraneous ‘

Author: bnmnetp

bookserver/templates/books/_base.html

@@ -15,7 +15,7 @@
             href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"
         />
         <link
-            href="/ns/staticAssets/main.css"	  
+            href="/ns/staticAssets/main.css"
             rel="stylesheet"
             media="screen"
         />
@@ -30,7 +30,7 @@
         <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
             <span class="navbar-toggler-icon"></span>
           </button>
-        
+
           <div class="collapse navbar-collapse" id="navbarSupportedContent">
             <ul class="navbar-nav mr-auto">
               <li class="nav-item active">
@@ -63,7 +63,7 @@
                   {% if is_instructor %}
                   <a class="dropdown-item" href="/runestone/admin/index">Instructor's Page</a>
                   <a class="dropdown-item" href="/runestone/peer/instructor.html">Peer Instruction (Instructor)</a>
-                  <a class="dropdown-item" href="https://author.runestone.academy'">Author Tools</a>
+                  <a class="dropdown-item" href="https://author.runestone.academy">Author Tools</a>
                   <a class="dropdown-item" href="/runestone/admin/manage_exercises">Editorial Page</a>
                   <div class="dropdown-divider"></div>
                   {% endif %}