replace categories by category in structure details

Author: folland87

src/api/commons/queries/structures.query.js

@@ -36,7 +36,7 @@ export default [
       _id: 0,
       id: 1,
       alternativePaysageIds: { $ifNull: ['$alternativePaysageIds', []] },
-      categories: { $ifNull: ['$categories', []] },
+      category: { $ifNull: ['$category', {}] },
       closureDate: { $ifNull: ['$closureDate', null] },
       closureOfficialText: { $ifNull: ['$closureOfficialText', {}] },
       closureOfficialTextId: { $ifNull: ['$closureOfficialTextId', null] },

src/openapi/schemas/structures/structure.yml

@@ -68,8 +68,8 @@ allOf:
       population:
         type: integer
         nullable: true
-      categories:
-        type: array
+      category:
+        type: object
       legalcategory:
         type: object
   - $ref: '../../api.yml#/components/schemas/Metas'