fix pagination url for collection table

[prabalsingh24]

Problem

Pagination is collection table was not working properly

Solution

fixed the pagination url. Removed an extra ?

[prabalsingh24]

This incorrect pagination url was causing some error in the pagination. The url was becoming collection?q=?size=20.
Removing that extra ? will fix it.

[coveralls]

Coverage remained the same at 60.995% when pulling d7cb597 on prabalsingh24:fix-collection-pagination into c60c531 on bookbrainz:master.

[MonkeyDo]

Ah, yes, good catch, I made those changes to the pagination mechanism on master, and forgot it would break the collections page!
Sorry and thanks for fixing it quick!