helping users when setting their key

[edublancas]

I got a report from a cloud user that they had a "malformed API key error", somewhere in our docs, we have the following instructions:

ploomber cloud set-key {your-key}

And the user was setting it with the {} characters. We should detect if the passed key begins with { and ends with }. If so, ignore those characters (or maybe show an error telling them to remove them?)

[idomic]

I think we can simply solve it with a comment in the guide, something along the lines:

# example: ploomber cloud set-key ABI8475@ODMFMOMD

[tonykploomber]

I think we should apply both:
Providing the example in guide + {} characters error detection