Tags ignored + symbol

Describe the bug When the C++ tag is used in mdx, the tag navigation page /tags shows C instead of C++

To Reproduce Steps to reproduce the behavior:

Include tags in mdx C++

---
title: C++原子性加减
date: 2020-05-04 05:09:02
tags:
  - C++
---
...

Expected behavior The list of tags can distinguish between C++ and C

Screenshots

System Info (if dev / build issue):

• OS: [e.g. iOS]
• Node version (please ensure you are using 18+)
• Npm version

Browser Info (if display / formatting issue):

• Device [e.g. Desktop, iPhone6] Desktop
• Browser [e.g. chrome, safari] chrome
• Version [e.g. 22] 137.0.7151.120

Additional context Add any other context about the problem here.