docs: update release checklist

Author: SoCuul

RELEASE_CHECKLIST.md

@@ -4,7 +4,6 @@
 - [ ] Update version string in `control`
 - [ ] Update version string in `src/Tweak.x`
 - [ ] Update version string at top of `README.md` 
-- [ ] Update version string in git clone command within `README.md` 
 - [ ] Update compatible Instagram app version at top of `README.md`
 - [ ] (Optional) Update screenshots