changed Repo Dispatch step values
changed Repo Dispatch step values

- changed token value to use , so as to be both
more descriptive of exactly what it is used for, and also leave room for future
uses of the same token for different events (for example triggering a test workflow
on pushes or merges)

- changed repository reference to use context instead of hard coded value, to allow
workflows to work for users who fork

foosel/OctoPrint,foosel/OctoPrint,foosel/OctoPrint,foosel/OctoPrint