Fix a few additional corner cases for the automatic anchor generation (#1387)

Author: malemburg

assets/js/generate_toc_for_cms.js

@@ -18,7 +18,8 @@ function addTOC() {
       var header_id = title
         .replace(/[ \n\t:&\/\$\xa0()]/g, "-")
         .replace(/--+/g, "-")
-        .replace(/[\?!,.\'\"]|^-|-$/g, "");
+        .replace(/[\?!,.\'\"\’]/g, "")
+        .replace(/^-|-$/g, "");
       header.attr("id", header_id);
       toc +=
         '<li class="toc-li table-of-contents-' +