Update YML input format documentation

[jthuangarm]

Clarify bundle consistency rules for components for Open-CMSIS-Pack/devtools#2401

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).

[brondani]

@jkrech Can you please review this documentation change concerning bundles?

Regarding the error message, is this ok or would you require any refinement?

error csolution: components from multiple bundles are specified:
    - ARM::RteTestBundle&BundleOne:G0
    - SomeVendor::RteTestBundle&BundleTwo:G0

[jkrech]

The error text above does not specify the rule that has been violated.

error csolution: Selected components belonging to the the same Cclass must not come from a different Cbundle.
Conflicting bundles: `&BundleOne` and `&BundleTwo` in components:
  - ARM::RteTestBundle&BundleOne:G0
  - SomeVendor::RteTestBundle&BundleTwo:G0
  - ...

I did not find a way to shorten it. Maybe you do.

[jthuangarm]

I would suggest the error message could be a bit shorter if we structure it like this:

error csolution: components in Cclass `RteTestBundle` must belong to the same Cbundle.
Conflicting bundles:
  - &BundleOne
  - &BundleTwo
Affected components:
  - ARM::RteTestBundle&BundleOne:G0
  - SomeVendor::RteTestBundle&BundleTwo:G0

[jthuangarm]

@jkrech The rules have been refined. Please review them again.

[jkrech]

Please review my suggested changes.

[brondani]

LGTM