Modify readme.md file

[g-savitha]

Describe the bug

1. Readme.md still shows FE resourse as Next.js, please update it to Vue.js
2. Add clear instructions for Project setup.

[g-savitha]

I see there are 2 readme.md files

1. /openrank-backend/readme.md
2. /openrank-backend/docs/readme.md

please update the repo with the appropriate one