fix link for CI

Author: Stephan Dilly

README.md

@@ -1,11 +1,12 @@
 <h1 align="center">
 <img width="300px" src="assets/logo.png" />
 
-![CI][s0] [![crates][s1]][l1] ![MIT][s2] [![UNSAFE][s3]][l3] [![ITCH][s4]][l4] [![DISC][s5]][l5]
+[![CI][s0]][l0] [![crates][s1]][l1] ![MIT][s2] [![UNSAFE][s3]][l3] [![ITCH][s4]][l4] [![DISC][s5]][l5]
 
 </h1>
 
 [s0]: https://github.com/extrawurst/gitui/workflows/CI/badge.svg
+[l0]: https://github.com/extrawurst/gitui/actions
 [s1]: https://img.shields.io/crates/v/gitui.svg
 [l1]: https://crates.io/crates/gitui
 [s2]: https://img.shields.io/badge/license-MIT-blue.svg