Reformat all code to use shell instead of sh

snippets/commit-set-author.md

@@ -8,11 +8,11 @@ Creates a new commit by the specified author.
 - Use `git commit -m <message>` to create a new commit with the specified `<message>`.
 - Use the `--author` option to change the `<name>` and `<email>` of the commit's author.
 
-```sh
+```shell
 git commit -m <message> --author="<name> <email>"
 ```
 
-```sh
+```shell
 # Make some changes to files
 git add .
 git commit -m "Fix the network bug" --author="Duck Quackers <cool.duck@qua.ck>"