Add sentence on internal editorial process to LP docsLp docs

[PhilReedData]

Summary of changes

• Add one sentence to internal editorial processes for learning paths doc.

Motivation and context

• Aligned to ELIXIR TeSS Club action.

Checklist

• [ x] I have read and followed the CONTRIBUTING guide.
• [x ] I confirm that I have the authority necessary to make this contribution on behalf of its copyright owner and agree to license it to the TeSS codebase under the BSD license.

[PhilReedData]

I've got a problem with the Gemfile.lock. I can try to start all over again from a fresh fork.