fix: remove unnecessary curly braces in wf api doc (#11658)

web/app/components/develop/template/template_workflow.en.mdx

@@ -238,7 +238,6 @@ Workflow applications offers non-session support and is ideal for translation, a
     </CodeGroup>
     <CodeGroup title="File upload sample code">
       ```json {{ title: 'File upload sample code' }}
-      {
       import requests
       import json
 
@@ -314,8 +313,6 @@ Workflow applications offers non-session support and is ideal for translation, a
           print(result)
       else:
           print("File upload failed and workflow cannot be executed")
-
-      }
       ```
     </CodeGroup>
   </Col>

web/app/components/develop/template/template_workflow.ja.mdx

@@ -238,7 +238,6 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
     </CodeGroup>
     <CodeGroup title="ファイルアップロードのサンプルコード">
       ```json {{ title: 'ファイルアップロードのサンプルコード' }}
-      {
       import requests
       import json
 
@@ -314,8 +313,6 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
           print(result)
       else:
           print("ファイルのアップロードに失敗し、ワークフローを実行できません")
-
-      }
       ```
     </CodeGroup>
   </Col>

web/app/components/develop/template/template_workflow.zh.mdx

@@ -232,7 +232,6 @@ Workflow 应用无会话支持，适合用于翻译/文章写作/总结 AI 等
     </CodeGroup>
     <CodeGroup title="File upload sample code">
       ```json {{ title: 'File upload sample code' }}
-      {
       import requests
       import json
 
@@ -308,8 +307,6 @@ Workflow 应用无会话支持，适合用于翻译/文章写作/总结 AI 等
           print(result)
       else:
           print("文件上传失败，无法执行工作流")
-
-      }
       ```
     </CodeGroup>
   </Col>