feat(docs): Annotated required params

models/contract.go

@@ -1,22 +1,22 @@
 package models
 
 type ContractRequest struct {
-	Runners []Runner `json:"runners"`
-	Locale  string   `json:"locale" enums:"en,de"`
+	Runners []Runner `json:"runners" validate:"required"`
+	Locale  string   `json:"locale" enums:"en,de" validate:"required"`
 }
 
 type Runner struct {
-	ID         int    `json:"id"`
-	FirstName  string `json:"first_name"`
-	MiddleName string `json:"middle_name"`
-	LastName   string `json:"last_name"`
-	Group      Group  `json:"group"`
+	ID         int    `json:"id" validate:"required"`
+	FirstName  string `json:"first_name" validate:"required"`
+	MiddleName string `json:"middle_name" validate:"optional"`
+	LastName   string `json:"last_name" validate:"required"`
+	Group      Group  `json:"group" validate:"required"`
 }
 
 type Group struct {
-	ID          int    `json:"id"`
-	Name        string `json:"name"`
-	ParentGroup *Group `json:"parent_group"`
+	ID          int    `json:"id" validate:"required"`
+	Name        string `json:"name" validate:"required"`
+	ParentGroup *Group `json:"parent_group" validate:"optional"`
 }
 
 type ContractTemplateOptions struct {