Update 4 files

- /content/docs/general/access-services/graphical-user-interface/x-window-system.mdx
- /content/docs/clusters/karolina/storage.mdx
- /content/docs/clusters/cs/guides/power10.mdx
- /content/docs/clusters/cs/guides/grace.mdx

content/docs/clusters/cs/guides/grace.mdx

@@ -203,7 +203,7 @@ int main(int argc, char *argv[])
 
 Stationary probability vector estimation in `Fortran`:
 
-```fortran
+```c++
 program main
     implicit none
 

content/docs/clusters/cs/guides/power10.mdx

@@ -171,7 +171,7 @@ int main(int argc, char *argv[])
 
 Stationary probability vector estimation in `Fortran`:
 
-```fortran
+```c++
 program main
     implicit none
 

content/docs/clusters/karolina/storage.mdx

@@ -60,7 +60,7 @@ The SCRATCH filesystem is mounted in the `/scratch/project/PROJECT_ID` directory
 
 To find out current SCRATCH quotas, use:
 
-```code
+```console
 [usr0123@login1.karolina ~]$ getent group OPEN-XX-XX
 open-xx-xx:*:1234:user1,...,usern
 

content/docs/general/access-services/graphical-user-interface/x-window-system.mdx

@@ -71,7 +71,7 @@ To run Linux GuI on WSL, download, for example, [VcXsrv][a].
 
 1. Test the configuration by running `echo $DISPLAY`:
 
-    ```code
+    ```console
      user@nb-user:/$ echo $DISPLAY
      172.26.240.1:0
     ```