fix: 修改验证码uuid参数默认是string

ym-admin/src/main/java/com/cnbm/admin/controller/LoginController.java

@@ -41,7 +41,7 @@ public class LoginController {
 
     @GetMapping("/captcha")
     @ApiOperation(value = "验证码", produces="application/octet-stream")
-    @ApiImplicitParam(paramType = "query", dataTypeClass=String.class, name = "uuid", required = true)
+    @ApiImplicitParam(paramType = "query", dataTypeClass=String.class, name = "uuid", required = true,example = "string")
     public void captcha(HttpServletResponse response, String uuid)throws IOException {
         //uuid不能为空
         AssertUtils.isBlank(uuid, ErrorCode.IDENTIFIER_NOT_NULL);
@@ -61,5 +61,4 @@ public class LoginController {
     public void logout(){
     }
 
-
 }