Changed description.

Author: a1fredbao

.competitive-verifier/docs/index.md

@@ -1,5 +1,5 @@
 This cp library is powered by [competitive-verifier/competitive-verifier](https://github.com/competitive-verifier/competitive-verifier). Thanks for making this project possible.
 
-The library is mainly for OI competitions, as well as some online cp contests like those on codeforces or atcoder. It is devoted to the heighest efficiency and wide compatibility. Any issue can be reported on the issue page, but no fixes or changes is guaranteed to be made.
+The library is mainly for OI competitions, as well as some online cp contests on codeforces or atcoder. It is devoted to the heighest efficiency and wide compatibility. Any issue can be reported on the issue page, but no fixes or changes is guaranteed to be made.
 
 The jiangly and watashi code library are from [this link for jiangly](https://github.com/hh2048/XCPC/) and [this link for watashi](https://github.com/nju-icpc/code-library-legacy/). The part of my code is open source under the MIT License.