doc: add language decorator on the code block

Add `c` decorator on the code block for applying syntax highlighting.

diff --git a/docs/BLOCK_DEVICE_LOCKING.md b/docs/BLOCK_DEVICE_LOCKING.md
index 87aad67045620dbfb93ad7d57e73cdd13a8ab3ee..862d6f0369d81fccc8808179a0271392c9912d9b 100644 (file)
--- a/docs/BLOCK_DEVICE_LOCKING.md
+++ b/docs/BLOCK_DEVICE_LOCKING.md
@@ -118,7 +118,7 @@ Failed to take a BSD lock on /dev/sda: Resource temporarily unavailable
 ```
 
 ## Code
-```
+```c
 /* SPDX-License-Identifier: MIT-0 */
 
 #include <stdio.h>