Fixed typos/grammatical errors and reworded some things
Update index.md - Fixed typos/grammatical errors and cleaned up certain instructions to make them more clear.
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
Update index.md - Fixed typos/grammatical errors and cleaned up certain instructions to make them more clear.