📚 Doc: Update example in middleware/cors to v3

[AuroraTea]

Description

There is an example in middleware/cors still uses the v2 syntax.

Fixes #3115

Changes introduced

• Documentation Update: Update the syntax of an example to v3 changed file.

Type of change

• Documentation update (changes to documentation)

Checklist

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• Followed the inspiration of the Express.js framework for new functionalities, making them similar in usage.
• Conducted a self-review of the code and provided comments for complex or critical parts.
• Updated the documentation in the /docs/ directory for Fiber's documentation.
• Added or updated unit tests to validate the effectiveness of the changes or new features.
• Ensured that new and existing unit tests pass locally with the changes.
• Verified that any new dependencies are essential and have been agreed upon by the maintainers/community.
• Aimed for optimal performance with minimal allocations in the new code.
• Provided benchmarks for the new code to analyze and improve upon.

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[coderabbitai]

Walkthrough

The changes involve updating the CORS middleware configuration in a Go application. The AllowOrigins and AllowHeaders fields have been modified from string literals to slices of strings, enhancing the structure and clarity of the configuration. Additionally, a correction was made to the spelling of "Origin" in the AllowHeaders field.

Changes

Files	Change Summary
docs/middleware/cors.md	Updated AllowOrigins from string to slice of strings; corrected "Origi" to "Origin" in AllowHeaders.

Assessment against linked issues

Objective	Addressed	Explanation
There is an example in middleware/cors still uses the v2 syntax. (#3115)	✅

Poem

In the meadow, I hop with glee,
CORS is fixed, oh joy for me!
Origins now in neat little rows,
Headers corrected, how the wind blows!
With each change, the code does sing,
A brighter future, let’s all spring! 🐇✨

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[coderabbitai]

Actionable comments posted: 1

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 4b1ee0b and cc18d39.

Files selected for processing (1)

• docs/middleware/cors.md (1 hunks)

Additional comments not posted (1)

docs/middleware/cors.md (1)

52-52: Approved: Updated AllowOrigins syntax to v3.

The change from a string to a slice of strings for AllowOrigins enhances clarity and maintainability of the configuration, aligning with Fiber v3 standards.

[coderabbitai]

Actionable comments posted: 0

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between cc18d39 and 2d813c3.

Files selected for processing (1)

• docs/middleware/cors.md (1 hunks)

Files skipped from review as they are similar to previous changes (1)

• docs/middleware/cors.md

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