Create issue template against documentation requests

[Mjl33]

Is your feature request related to a problem? Please describe.
Add documentation template for improvement requests
Ensure public is able to pull request on frameworkium doc repo

Describe the solution you'd like
When public has an bug/feature request against documentation, present them with a documentation template.
Present a reasonable checklist

Describe alternatives you've considered
Example https://github.com/allure-framework/allure2/blob/master/.github/ISSUE_TEMPLATE/documentation.md

Additional context
Nil