update markdown-it-anchor

package.json

@@ -11,14 +11,13 @@
         "@testing-library/user-event": "12.6.0",
         "@types/codemirror": "0.0.102",
         "@types/d3-graphviz": "2.6.6",
-        "@types/diff": "4.0.2",
+        "@types/diff": "5.0.0",
         "@types/domhandler": "2.4.1",
         "@types/highlight.js": "9.12.4",
         "@types/jest": "26.0.19",
         "@types/js-yaml": "3.12.5",
         "@types/luxon": "1.25.0",
-        "@types/markdown-it": "10.0.3",
-        "@types/markdown-it-anchor": "4.0.4",
+        "@types/markdown-it": "12.0.0",
         "@types/markdown-it-container": "2.0.3",
         "@types/mermaid": "8.2.1",
         "@types/node": "12.12.53",
@@ -62,7 +61,7 @@
         "luxon": "1.25.0",
         "markdown-it": "12.0.4",
         "markdown-it-abbr": "1.0.4",
-        "markdown-it-anchor": "6.0.1",
+        "@mrdrogdrog/markdown-it-anchor": "6.0.3",
         "markdown-it-container": "3.0.0",
         "markdown-it-deflist": "2.1.0",
         "markdown-it-emoji": "2.0.0",

src/components/markdown-renderer/markdown-it-plugins/headline-anchors.ts

@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+import anchor from '@mrdrogdrog/markdown-it-anchor'
 import MarkdownIt from 'markdown-it'
-import anchor from 'markdown-it-anchor'
 
 export const headlineAnchors: MarkdownIt.PluginSimple = (markdownIt) => {
   // noinspection CheckTagEmptyBody