ci: migrate Hugo languageName config to label

[nafisa404]

Description

Fixes #1030

• Replaced deprecated languages.en.languageName with languages.en.label
• Updated the minimum Hugo version requirement to 0.112.0
• Removes the Hugo v0.158.0 deprecation warning during make site

Validation

• Attempted to run make site, but make is not installed in the local Windows environment
• Verified the repository-pinned Hugo binary is v0.158.0
• Attempted equivalent Hugo commands; they no longer emit the languages.en.languageName deprecation warning before stopping on missing go for Hugo module loading

[welcome]

Yay, your first pull request! 👍 A contributor will be by to give feedback soon. In the meantime, please review the Layer5 Community Welcome Guide and sure to join the community Slack.
Be sure to double-check that you have signed your commits. Here are instructions for making signing an implicit activity while peforming a commit.

[gemini-code-assist]

Code Review

This pull request updates the Hugo configuration by replacing the deprecated languageName property with label for the English language settings. Feedback suggests updating the minimum Hugo version requirement in the configuration to at least 0.112.0 to ensure compatibility with this change.

[github-actions]

🚀 Preview deployment: https://layer5io.github.io/docs/pr-preview/pr-1031/

Note: Preview may take a moment (GitHub Pages deployment in progress). Please wait and refresh. Track deployment here