[python-pytrakt] fix season number in show_collection

[simonc56]

trafficstars

In Users, the show_collection() function fetches all collected seasons as seasons 1.

Here : https://github.com/moogar0880/PyTrakt/blob/8a6d4f168a858447014fb4c2c0efceb47b30ebb7/trakt/users.py#L375-L376

Same as:

• https://github.com/moogar0880/PyTrakt/issues/98

And the fix was:

• https://github.com/moogar0880/PyTrakt/pull/100

fixes #76

[glensc]

@twolaw this is still valid to carry to python-pytrakt?

[simonc56]

yes

[glensc]

Carried to my fork:

• https://github.com/glensc/python-pytrakt/commit/18f0ac3c66d6e3a3c881cc491babe2862741626a

@twolaw can you please update pr title with [python-pytrakt] prefix to indicate so