bugfix: Using f-string on subscription url

[danielzre]

Hi

My company is currently integrating the subscription api and we found a small typo in this library. Can we merge this fix?

Output before fix:

planet.exceptions.BadQuery: {"error":{"reason":"Request failed schema validation","details":["parameter 'subscriptionId' in path has an error: JSON string doesn't match the format 'uuid (regular expression `^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$`)' | "]}}

[sgillies]

@danielzre thank you very much! The typo is small only when measured by the number of characters. I'll follow up with changes to the tests to prevent a regression.

[sgillies]

@danielzre would a new pre-release with the fix be useful to you?

[danielzre]

@sgillies Yes, it would be really useful hahah. Is there any ETA for this pre-release?

[sgillies]

@danielzre I'm preparing 2.0a3 now. It will be on PyPI in about an hour.

[cholmes]

@danielzre - we really appreciate your contribution, I think you're the first non-planet contributor to the library! I'd love to talk to you further about what you're doing with Planet API's and what you'd be interested in us prioritizing in the new SDK. If you're up for it send me an email at cholmes [at] planet dotcom.