Reformat all code to use shell instead of sh

snippets/line-endings.md

@@ -8,10 +8,10 @@ Configures the line endings for a repository.
 - Use `git config core.eol [lf | crlf]` to configure the line endings.
 - `lf` is the UNIX line ending (`\n`), whereas `crlf` is the DOS line ending (`\r\n`).
 
-```sh
+```shell
 git config core.eol [lf | crlf]
 ```
 
-```sh
+```shell
 git config core.eol lf # Configured to use UNIX line endings
 ```