docs: Validate Swagger docs (#1486)

server/api/models/BackgroundImage.js

@@ -36,7 +36,7 @@
  *         size:
  *           type: string
  *           description: File size of the background image in bytes
- *           example: 1024576
+ *           example: "1024576"
  *         url:
  *           type: string
  *           format: uri

server/api/models/Config.js

@@ -22,7 +22,7 @@
  *         id:
  *           type: string
  *           description: Unique identifier for the config (always set to '1')
- *           example: 1
+ *           example: "1"
  *         smtpHost:
  *           type: string
  *           nullable: true

server/api/models/User.js

@@ -88,7 +88,7 @@
  *           type: string
  *           nullable: true
  *           description: Contact phone number
- *           example: +1234567890
+ *           example: "+1234567890"
  *         organization:
  *           type: string
  *           nullable: true
@@ -145,6 +145,7 @@
  *           example: byDefault
  *         termsType:
  *           type: string
+ *           enum: [general, extended]
  *           description: Type of terms applicable to the user based on role
  *           example: general
  *         isSsoUser: