Attempt to fix https://github.com/bazelbuild/bazel/issues/17176 by:
- Creating a new template for doc issues
- Populating the "page link" field with a full link (domain + path)
- Updating labels

Closes #17177.

PiperOrigin-RevId: 508553013
Change-Id: I2d52125eb9b8a6efd1f3fe3e2be8cfe4ad2d8230