Fix examples in Registries

{ 
  facets: 
    [ 
      {
        id: "MyFirstFacet", 
        description: "This is my first facet", 
      },
      { 
        id: "MySecondFacet", 
        label: "My Second Facet",
        description: "This is my second facet", 
        // since Nuxeo 5.5, a facet can hold schemas
        schemas: ["schemas_defined_for_facets"], 
      } 
    ] 
}

{ 
  "facets": 
    [ 
      {
        "id": "MyFirstFacet", 
        "description": "This is my first facet", 
      },
     [...]
    ] 
}