Docs Fixes
Fix docs errors which are preventing publishing:
Build errors encountered. Book 'ukgiftaid' in language 'English' was not published.
There was a build error: 'MkDocs was unable to build the book.
MkDocs command output: INFO - Cleaning site directory
INFO - Building documentation to directory: /var/www/civicrm-docs/var/cache/dev/publishing/publish_ukgiftaid_en
_1589921832
WARNING - Documentation file 'index.md' contains a link to 'LICENSE.txt' which is not found in the documentation f
iles.
WARNING - Documentation file 'api.md' contains a link to '../api.md' which is not found in the documentation files
.
WARNING - Documentation file 'contributions.md' contains a link to '../api.md' which is not found in the documenta
tion files.
WARNING - Documentation file 'releasenotes.md' contains a link to '../api.md' which is not found in the documentat
ion files.
WARNING - Documentation file 'releasenotes.md' contains a link to '../declaration.md' which is not found in the do
cumentation files.
WARNING - Documentation file 'releasenotes.md' contains a link to '../contributions.md' which is not found in the
documentation files.
Exited with 6 warnings in strict mode.