revert markdown codeblock change

TheFox0x7 · TheFox0x7 · commit 197894cfa6eb · 2025-07-06T13:06:45.000+02:00
diff --git a/contrib/autocompletion/README b/contrib/autocompletion/README
@@ -9,7 +9,7 @@ source contrib/autocompletion/bash_autocomplete
 
 for zsh run:
 
-```zsh
+```bash
 source contrib/autocompletion/zsh_autocomplete
 ```
 
