Fixed codacy requirements

cps/static/js/edit_books.js

@@ -206,10 +206,10 @@ $("#search").on("change input.typeahead:selected", function() {
     });
 });
 
-$("#btn-upload-format").on('change', function () {
+$("#btn-upload-format").on("change", function () {
     var filename = $(this).val();
-    if (filename.substring(3,11) == 'fakepath') {
+    if (filename.substring(3,11) === "fakepath") {
         filename = filename.substring(12);
     } // Remove c:\fake at beginning from localhost chrome
-    $('#upload-format').html(filename);
+    $("#upload-format").html(filename);
 });