Update PULL_REQUEST_TEMPLATE.md

[MikeAdamsMews]

Changed Style Guide link to point to new location in Confluence

Summary

• Updated link to Style Guide from Guru -> Confluence

Follow style guide

Style guide

Check during review

• The changelog and potentially a deprecation entries are in place.
  • The changelog timestamp is date of merge to develop.
• JSON example extended.
  • New properties are added to the correct place in the JSON.
• New properties in the table are added to the correct place.
• Correct formatting:
  • Spacing is consistent between titles, sections, tables, ...
  • Correct JSON format - indentation.
• DateTime properties should always be defined in ISO format.

[jnv]

The link is invalid.

Anyway, since this repository is public, have you considered mirroring the contents of the document in CONTRIBUTING.md file and link it from Confluence?