Minor typo 'Debbugging'

[arky]

Corrected a minor typo in section heading

First time contributor checklist:

• I have read the README

Contributor checklist:

• My contribution is not related to translations. Please submit translation changes via our Mapeo Crowdin project
• My commits are in nice logical chunks with good commit messages
• I have walked through the QA Manual Testing
  Script and updated it if necessary.
• If my changes depend upon an update to a dependency, I have updated the package-lock.json file using npm install --package-lock
• My changes have been tested with the mobile app.
• My changes are ready to be shipped to users on Windows, Mac, and Linux using the production version of the application built with electron-builder.

Description

[achou11]

Thanks Arky!