fix: rename 'tasks' folder to 'task'

[hervelemeur]

When running jx pipeline import --url https://github.com/jenkins-x/jx3-pipeline-catalog

I had this error:

loading tekton tasks from: https://github.com/jenkins-x/jx3-pipeline-catalog ...

error: the catalog does not include a 'task' directory at /var/folders/m4/ytp3wjnn1hlbrxt27d64jc3c0000gn/T/jx-git-658269897

Fixes #70

Signed-off-by: Hervé Le Meur herve.lemeur@sixense-group.com

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[hervelemeur]

/assign @jstrachan

[hervelemeur]

Slack thread

[jstrachan]

incidentally we never intended the pipeline catalog to be usable as a tekton catalog; I guess though thats a natural thing for folks to think. The main issue is we didn't want to have to put a version name in the directory; as we're using git sha/branch/tags for versioning

[hervelemeur]

replaced by #331