fix documentation for providing custom bean scenario

[Semernitskaya]

Description

Fixed documentation for bean overriding process

Motivation and Context

I found that bean overriding description is not fully clear and can confuse Riptide users, especially challenging can be cases when Http client bean name can't be used as-is in the method name. I provided more detailed description and one additional example.

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)

Checklist:

Not applicable since it is a documentation fix

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.

[fatroom]

@Semernitskaya can you please merge main branch to get the build passing?

[fatroom]

Thank you for the contribution!

[fatroom]

👍