Files in www/docs/en/dev/reference are not fetched on every build.

Some files in the docs are downloaded from external sources, into www/docs/en/dev/reference. The files and their sources are defined in cordova-docs/www/_data/fetched-files.yml, and downloaded by the gulp fetch task, which runs on every build.

Expected behaviour: the files are fetched every time the command runs.

Actual behaviour: the files are only fetched if the www/docs/en/dev/reference directory doesn't exist. That is, fetching is skipped every time after the first time.