create relative symlink instead of absolute path

[gautamsi]

closes #6137

creates symlink with relative folder instead of absolute

you can use this docker-compose.yaml to test this

version: "2"
services:
  core:
    image: "node:lts"
    user: "node"
    working_dir: /home/node/app
    environment:
      - NODE_ENV=production
    volumes:
      - ./:/home/node/app
    ports:
    - "3000:3000"
    expose:
      - "3000"
    command: "yarn --cwd ./examples/blog start"

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🦋 Changeset detected

Latest commit: 6eee9ea

The changes in this PR will be included in the next version bump.

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Name	Type
@keystone-next/keystone	Patch

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