Fix typo in CONTRIBUTING.md

Author: zerowidth

CONTRIBUTING.md

@@ -3,7 +3,7 @@
 [fork]: https://github.com/github/scientist/fork
 [pr]: https://github.com/github/scientist/compare
 
-Hi there! We're thrilled that you'd liske to contribute to this project. Your help is essential for keeping it great.
+Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
 
 Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [project's open source license](LICENSE.txt).