chore(engine.io): fix comment formatting inconsistencies in socket.ts

[vipin8797]

The kind of change this PR does introduce

• [x] a bug fix
• [ ] a new feature
• [ ] an update to the documentation
• [ ] a code change that improves performance
• [ ] other

Current behavior

The file packages/engine.io/lib/socket.ts currently contains several comment formatting inconsistencies, including:

• Inconsistent capitalization (e.g., comments starting with lowercase)
• Missing spaces after //
• Missing periods at the end of full-sentence comments
• TODO comment without colon and inconsistent indentation
• Multi-line comments with uneven formatting

These issues reduce readability and make the file inconsistent with the rest of the codebase.

New behavior

This PR normalizes comment formatting across packages/engine.io/lib/socket.ts:

• Capitalized all comment beginnings
• Added missing periods for full-sentence comments
• Normalized spacing after //
• Improved the TODO comment format (TODO: with proper capitalization)
• Cleaned up multi-line comment formatting for readability

No functional or behavioral code changes were introduced.

Other information (e.g. related issues)

This is a small internal cleanup PR intended to improve code readability and maintain consistency across the codebase.

No related issues.
よろしくお願いします！