Fix GitLab.com subscription expiry banner wording

Summary

Currently, a banner displayed on a GitLab.com group overview page when a subscription is about to expire has an extra word 'to' that should be removed. Screenshot_2020-07-29_at_11.28.11

Steps to reproduce

View a group overview page on GitLab.com for a group that is about to expire and a banner displays at the top of the page.

Proposal

Update

Your Gold subscription for Okapi Framework will expire on 2020-08-21. After that, you will not to be able to use merge approvals or epics as well as many security features.

to

Your Gold subscription for Okapi Framework will expire on 2020-08-21. After that, you will not be able to use merge approvals or epics as well as many security features.