Update CONTRIBUTING.md

Author: pragmatrix

CONTRIBUTING.md

@@ -34,7 +34,6 @@ Examples should be added to `/skia-safe/examples` or directly to the `/skia-org`
 Since the beginning of this project, the maintainer team is updating rust-skia to match the Skia API version in the latest stable Chrome release. A new Chrome release [is scheduled](https://chromium.googlesource.com/chromium/src/+/master/docs/process/release_cycle.md) about every 4 weeks and most changes for the upcoming version are already settled when the current release is out, so there is enough time to update rust-skia. For most new Skia releases, the changes are trivial and are integrated without breaking backwards compatibility on the Rust side.
 
 Even though this puts some pressure on dependent projects, we'd try to keep rust-skia updated, because falling behind Chrome's and Flutter's development to keep Skia _modern_ is not an option.
-time.
 
 ## Licensing