fix: administrator add user failure

docs/docs.go

@@ -7829,7 +7829,7 @@ const docTemplate = `{
                 "display_name": {
                     "type": "string",
                     "maxLength": 30,
-                    "minLength": 4
+                    "minLength": 2
                 },
                 "email": {
                     "type": "string",

docs/swagger.json

@@ -7802,7 +7802,7 @@
                 "display_name": {
                     "type": "string",
                     "maxLength": 30,
-                    "minLength": 4
+                    "minLength": 2
                 },
                 "email": {
                     "type": "string",

docs/swagger.yaml

@@ -270,7 +270,7 @@ definitions:
     properties:
       display_name:
         maxLength: 30
-        minLength: 4
+        minLength: 2
         type: string
       email:
         maxLength: 500

internal/schema/backyard_user_schema.go

@@ -120,7 +120,7 @@ type EditUserProfileReq struct {
 
 // AddUserReq add user request
 type AddUserReq struct {
-	DisplayName string `validate:"required,gte=4,lte=30" json:"display_name"`
+	DisplayName string `validate:"required,gte=2,lte=30" json:"display_name"`
 	Email       string `validate:"required,email,gt=0,lte=500" json:"email"`
 	Password    string `validate:"required,gte=8,lte=32" json:"password"`
 	LoginUserID string `json:"-"`