fixed CSP error with inline js

html/navbar.html

@@ -22,14 +22,7 @@
     <a href="{next_chapter_link}">{next_chapter_name}</a>
     &rightarrow;
 </div>
-<script>
-    function make_shortcode(){{
-        var xmlHttp = new XMLHttpRequest();
-        var theUrl = "/mksc/" + document.getElementById("searchBar").value;
-        xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
-        xmlHttp.send( null );
-        document.getElementById("context_href").innerHTML = xmlHttp.responseText;
-        document.getElementById('context_href').setAttribute("href", "/" + xmlHttp.responseText);
-    }}
+<script src="js/shortcode.js">
+	make_shortcode();
 </script>
-</header>
+</header>