Updated SC2024 (markdown)

SC2024.md

@@ -6,7 +6,7 @@ or "Use `sudo cat file | ..`" instead of `<` to read.
 
 ### Problematic code:
 
-```
+```sh
 # Write to a file
 sudo echo 3 > /proc/sys/vm/drop_caches
 
@@ -19,7 +19,7 @@ sudo wc -l < /etc/shadow
 
 ### Correct code:
 
-```
+```sh
 # Write to a file
 echo 3 | sudo tee /proc/sys/vm/drop_caches > /dev/null
 
@@ -45,14 +45,14 @@ Note: there is nothing special about `tee`. It's just the simplest command that
 
 Truncating:
 
-```
+```sh
 echo 'data' | sudo dd of=file
 echo 'data' | sudo sed 'w file'
 ```
 
 Appending:
 
-```
+```sh
 echo 'data' | sudo awk '{ print $0 >> "file" }'
 echo 'data' | sudo sh -c 'cat >> file'
 ```