Merge pull request #235979 from msaenzbosupport/patch-16

[Doc-A-THon] Updating codeblock and sudo

Author: prmerger-automator[bot]

articles/azure-netapp-files/performance-linux-nfs-read-ahead.md

@@ -53,11 +53,15 @@ Read-ahead can be defined either dynamically per NFS mount using the following s
 
 To show the current read-ahead value (the returned value is in KiB), run the following command:  
 
-`$ ./readahead.sh show <mount-point>`   
+```bash
+   ./readahead.sh show <mount-point>
+```
 
 To set a new value for read-ahead, run the following command:   
 
-`$ ./readahead.sh set <mount-point> [read-ahead-kb]`
+```bash
+./readahead.sh set <mount-point> [read-ahead-kb]
+```
 
 ### Example   
 
@@ -100,11 +104,15 @@ To persistently set read-ahead for NFS mounts, `udev` rules can be written as fo
 
 1. Create and test `/etc/udev/rules.d/99-nfs.rules`:
 
-    `SUBSYSTEM=="bdi", ACTION=="add", PROGRAM="<absolute_path>/awk -v bdi=$kernel 'BEGIN{ret=1} {if ($4 == bdi) {ret=0}} END{exit ret}' /proc/fs/nfsfs/volumes", ATTR{read_ahead_kb}="15380"`
+    ```config
+       SUBSYSTEM=="bdi", ACTION=="add", PROGRAM="<absolute_path>/awk -v bdi=$kernel 'BEGIN{ret=1} {if ($4 == bdi) {ret=0}} END{exit ret}' /proc/fs/nfsfs/volumes", ATTR{read_ahead_kb}="15380"
+   ```
 
 2. Apply the `udev` rule:   
 
-    `$udevadm control --reload`
+    ```bash
+       sudo udevadm control --reload
+    ```
 
 ## Next steps