Updated Linux instructions (markdown)

Linux-instructions.md

@@ -27,14 +27,15 @@ emerge -av media-fonts/fira-code
 Fira Code package is available in the official repository.
 
 To install, perform the following command:
-```
+```bash
 dnf install fira-code-fonts
 ```
 
 ### Solus
 
-Fira Code package is available in the official repository: `font-firacode-ttf` and `font-firacode-otf`.  
-They can be installed by running: `sudo eopkg install font-firacode-ttf font-firacode-otf`
+```bash
+sudo eopkg install font-firacode-ttf
+```
 
 ### Void linux