Specify the language of the code

Author: CrazyMarvin

INTRODUCTION.md

@@ -3,15 +3,15 @@ Application to launcher the products the company offers.
 
 ## Building the application.
 Install NodeJS 20 on your machine. And goto the project root and run following commands.
-```
+```bash
 npm run install
 ```
 In order to generate the executables. Run following. 
-```
+```bash
 npm run package
 ```
 To generate executables for all platforms run following.
-```
+```bash
 npm run package-all
 ```