Fix: Refine Create method descriptions with the resource collection applicability

[yelizhenden-mdb]

Proposed changes

Includes "This rule applies only to POST requests targeting resource collection URIs." sentence to the IPA-106:Create rules

Checklist

• I have signed the MongoDB CLA
• I have added tests that prove my fix is effective or that my feature works

Changes to Spectral

• I have read the README file for Spectral Updates

Further comments

[wtrocki]

@yelizhenden-mdb @lovisaberggren YAML has multiple formats for multilines. Since our generator uses table format any form of line breaks or markdown like content will break table. To prevent from that we can use >-

Alternatively we can move from table format to chapter format per rule. IMHO that could be much better as each rule can be linked directly in failure mesasge. WDYT?

[wtrocki]

LGTM. Happy to apply suggestions across the implementation

[wtrocki]

Merged as I would like to get this one refined as well.