Copr repo with a group owner requires quotes

[jpopelka]

I almost started filling an issue until I realized that the

Invalid yaml syntax: Failed to parse '/*/plans/*.fmf'.
while scanning for the next token
found character that cannot start any token
  in "<unicode string>", line x, column y

really means a mistake on my side and I need to enclose the group-owned copr repo in quotes because of the @ which copr prefixes the groups with.

Feel free to close if you think that's obvious and doesn't need any explicit notes.

[psss]

Thanks for making this clear!