feat: 新增账号密码在swagger有默认值

ym-admin/src/main/java/com/cnbm/admin/params/LoginParam.java

@@ -17,11 +17,11 @@ import java.io.Serializable;
 public class LoginParam implements Serializable {
     private static final long serialVersionUID = 1L;
 
-    @ApiModelProperty(value = "用户名", required = true)
+    @ApiModelProperty(value = "用户名", required = true, example = "admin")
     @NotBlank(message="用户名不能为空")
     private String username;
 
-    @ApiModelProperty(value = "密码" , required = true)
+    @ApiModelProperty(value = "密码" , required = true, example = "admin")
     @NotBlank(message="密码不能为空")
     private String password;