runer typo fix

CHANGELOG.md

@@ -19,7 +19,7 @@ v 1.2.0
 - Make variables to work at job level in exec mode
 - Remove "user mode" warning when running in a system mode
 - Create `gitlab-runner` user as a system account
-- Properly create `/etc/gitlab-runer/certs` in Runner's official docker images
+- Properly create `/etc/gitlab-runner/certs` in Runner's official docker images
 - Disable recursive submodule fetchin on fetching changes
 - Fix nil casting issue on docker client creation
 - Fix used build platforms for `gox`