Describe the bug

A rendered markdown file includes an empty <a/> tag in the markdown H1 title.
For example:

# <a id="Newtonsoft_Json_Generated_CustomBinding0_4"></a> Delegate CustomBinding0<TSelf, T0, T1, T2\>

Is this rendered for a reason, or is it a bug? What is the role of this element?

To Reproduce
Steps to reproduce the behavior:

Run docfx with metadata.outputFormat: "markdown" option.

{
  "metadata": [
    {
      "src": [
        {
          "src": "..",
          "files": [
            "**/*.cs"
          ]
        }
      ],
      "dest": "api",
      "globalNamespaceId": "Global",
      "allowCompilationErrors": true,
      "namespaceLayout": "nested",
      "outputFormat": "markdown"
    }
  ]
}

Expected behavior

If rendering this empty <a/> element is unnecessary, I expect this not to be included in the markdown file.

Context (please complete the following information):

• OS: macOS 14.2.1(23C71)
• Docfx version: 2.75.3+a5c719410037cc288c7adff010b1abf3c0f2e581
• Dotnet version: 7.0.403

Additional context

I'm working on a Unity package project, and I referenced the docfx settings of https://github.com/CaseyHofland/docfx-unitypackage.