Write content process.env.node_env === 'Development' to report an error

[n1203]

Describe the bug

The relevant expression of the environment variables in the document will cause the page to report an error cannot be displayed

Reproduction

mkdir docs && echo '# Hello VitePress process.env.NODE_ENV === 'development' ' > docs/index.md

Expected behavior

System Info

System:
    OS: macOS 12.4
    CPU: (10) x64 Apple M1 Pro
    Memory: 30.27 MB / 16.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 14.20.0 - /usr/local/bin/node
    Yarn: 1.22.18 - /usr/local/bin/yarn
    npm: 6.14.17 - /usr/local/bin/npm
  Browsers:
    Chrome: 103.0.5060.114
    Safari: 15.5

Additional context

**Example**
General transmission:  `process.env.NODE_ENV === 'development'`

Validations

• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[brc-dd]

Was fixed by #888. It'll be there in the next release.