Add Vale linter for doc quality checks

[Ayush9026]

Description

The Vale Linter (natural language linter) implements spell check and other basic rules.

_https://github.com/errata-ai/vale

Proposed Changes:

1.Integrate a natural language linter like Vale into the Prometheus Operator documentation workflow.
2.Implement spell check and grammar rules to ensure consistent language usage across all documentation pages.
3.Define style libraries and extension points within the linter to enforce project-specific writing guidelines and conventions.
4.Configure the linter to check for common writing errors, improve readability, and suggest enhancements for technical content.
5.Provide guidelines and documentation on how contributors can use the linter during the documentation writing and review process.

Benefits:

Improved documentation quality with consistent spelling, grammar, and style.
Enhanced readability and understanding of technical content for users and contributors.
Facilitates collaboration by establishing clear writing standards and guidelines.
Supports the long-term maintainability and scalability of the Prometheus Operator documentation.

Describe alternatives you've considered.

No response

[ArthurSens]

Do I understand correctly that you want to propose this linter only to markdown files?

I think it's worth trying it out and checking the results. I don't think we can fully commit until we see the suggestions the linter makes 🤔

[Ayush9026]

Yes, you understand correctly. 👍 Initially, I propose integrating the Vale Linter specifically for Markdown files in the Prometheus Operator documentation. This focused approach targets spelling, grammar, and style, crucial for readability.

We'll assess the linter's suggestions to gauge effectiveness before considering wider use across different types of documentation files.

[ArthurSens]

Do you want to try opening a PR with the linter?

[Ayush9026]

Yes i will open PR for this.