Fix escaped HTML showing up in page navigation

Resolves #2224

Author: Gerrit0

CHANGELOG.md

@@ -11,7 +11,7 @@
 
 ### Bug Fixes
 
--   Validation will no longer be skipped for sub packages when running with `--entryPointStrategy packages`.
+-   Fixed `&` showing as `&` and HTML text showing up in page contents navigation, #2224.
 -   Increased padding between sections when one navigation column is displayed, #2225.
 -   Correct padding for navigation elements with a displayed icon, #2229.
 -   Fixed `source-order` sort strategy failing to compare reflections within a file.
@@ -23,6 +23,7 @@
 -   Fixed "Implementation of X.y" links if a mixture of methods and property-methods are used, #2233.
 -   "Implementation of" text to symbol-properties not contained in the documentation will now use the resolved name instead of a `__@` symbol name, #2234.
 -   Fix expansion of globs if a single entry point is provided, #2235.
+-   Validation will no longer be skipped for sub packages when running with `--entryPointStrategy packages`.
 -   Fixed broken theme toggle if the page contained a member named "theme".
 
 ### Thanks!

src/lib/output/themes/MarkedPlugin.ts

@@ -7,6 +7,7 @@ import { RendererEvent, MarkdownEvent, PageEvent } from "../events";
 import { BindOption, readFile, copySync, isFile } from "../../utils";
 import { highlight, isSupportedLanguage } from "../../utils/highlighter";
 import type { Theme } from "shiki";
+import { getTextContent } from "../../utils/html";
 
 /**
  * Implements markdown and relativeURL helpers for templates.
@@ -192,7 +193,7 @@ output file :
                 // Prefix the slug with an extra `$` to prevent conflicts with TypeDoc's anchors.
                 this.page!.pageHeadings.push({
                     link: `#md:${slug}`,
-                    text,
+                    text: getTextContent(text),
                     level,
                 });
                 return `<a id="md:${slug}" class="tsd-anchor"></a><h${level}><a href="#$${slug}" style="color:inherit;text-decoration:none">${text}</a></h${level}>`;