Create prompt/issue-type and validate markdown generation with GitHub plugin

[TimKozak]

Acceptance Criteria

Given the agent submits a request to update specific markdown files,
When the plugin processes the request,
Then the correct .md files are updated with new content

Given the update is completed,
When a PR is created by the plugin,
Then the PR reflects the markdown file changes in the appropriate branch.

Dependencies

• Create a document outlining required docsify folder structure and .md formatting rules & templates #203
  Markdown file updates should take into account instructions and guidelines provided here:

• Create prompt/issue-type and validate agent's ability to locate appropriate folder and .md files to be updated #263
  Agent should be able to locate files to be updated