chore: updated docs

backend/docs/swagger.yaml

@@ -32,11 +32,8 @@ definitions:
       email:
         type: string
       password:
-        description: 'TODO: password checking'
         type: string
       username:
-        maxLength: 20
-        minLength: 3
         type: string
     required:
     - password
@@ -44,17 +41,11 @@ definitions:
     type: object
   models.RegistrationCompleteRequest:
     properties:
-      avatar_url:
-        maxLength: 255
-        type: string
       birthday:
         type: string
       name:
-        maxLength: 75
         type: string
       username:
-        maxLength: 20
-        minLength: 3
         type: string
       verification_code:
         type: string
@@ -157,7 +148,9 @@ paths:
       - application/json
       responses:
         "200":
-          description: desc
+          description: Account is created and awaiting verification
+        "409":
+          description: Username or email is already taken
       summary: Register an account
       tags:
       - Auth