[Plugins] When creating a plugin, the path to the plugin has a relative path starting with "./" and should not

[sebastienlevert]

When generating a plugin, the runtimes section of the plugin has spec url that contains ./ and should not.

"runtimes": [
    {
      "type": "OpenApi",
      "auth": {
        "type": "None"
      },
      "spec": {
        "url": "openapi.yml"
      },
      "run_for_functions": [
        "listRepairs"
      ]
    }
  ]

[baywet]

authored #4586