spelling mistake corrected inside astrjs.json

[rudro54]

Hello Brother Salam

spelling corrected and practiced fork with pull request

1. fork will create a copy in my github repository with a link towards owner
2. I can clone my copy from github to download to my local machine
3. Then after doing my part i will add, commit and push into the branch specified
4. then inside github i will create a pull request to the owner so that he / she can check and accept if ok