docs: simplify counter example

[rikhuijzer]

I thought _create_resource_text was part of the public API, but noticed that it's only used inside this file. To make that more clear, I moved the function definition closer to the callsite.

Motivation and Context

It makes the example a bit clearer.

How Has This Been Tested?

I manually ran the examples.

Breaking Changes

No

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

[rikhuijzer]

This had no effect like in #112. Setting default-features = false does not compile so I just removed it.

[jokemanfire]

Sorry , I didn't meet this problem, could you pls provide more detail?

[rikhuijzer]

Uhm yes I'll try. The setting no-default-features does not exists, so no-default-features = true is ignored by Cargo. The setting should be default-features = true, but if you set that the code does not compile. So that's why I removed it.

[rikhuijzer]

The confusion might be because of cargo build --no-default-features. That is a valid option.