fix(curriculum): update 3 Chinese challenges

curriculum/challenges/chinese/05-apis-and-microservices/apis-and-microservices-projects/url-shortener-microservice.md

@@ -36,7 +36,7 @@ tests:
 </section>
 
 ## Challenge Seed
-<section id='challengeSeed'
+<section id='challengeSeed'>
 
 </section>
 

curriculum/challenges/chinese/06-quality-assurance/advanced-node-and-express/send-and-display-chat-messages.md

@@ -48,7 +48,7 @@ socket.emit('chat message', messageToSend);
 tests:
   - text: 服务端应监听 <code>'chat message'</code>，且应在监听到后 emit。
     testString: getUserInput => $.get(getUserInput('url')+ '/_api/server.js') .then(data => { assert.match(data, /socket.on.*('|")chat message('|")[^]*io.emit.*('|")chat message('|").*name.*message/gis, 'Your server should listen to the socket for "chat message" then emit to all users "chat message" with name and message in the data object'); }, xhr => { throw new Error(xhr.statusText); })
-  - text: '客户端应正确处理和展示从 <code>'chat message'</code> 事件发来的新数据。
+  - text: 客户端应正确处理和展示从 <code>'chat message'</code> 事件发来的新数据。
     testString: 'getUserInput => $.get(getUserInput(''url'')+ ''/public/client.js'') .then(data => { assert.match(data, /socket.on.*(''|")chat message(''|")[^]*messages.*li/gis, ''You should append a list item to #messages on your client within the "chat message" event listener to display the new message''); }, xhr => { throw new Error(xhr.statusText); })'
 ```
 

curriculum/challenges/chinese/08-data-analysis-with-python/data-analysis-with-python-course/pandas-conditional-selection-and-modifying-dataframes.md

@@ -1,6 +1,6 @@
 ---
 id: 5e9a093a74c4063ca6f7c15b
-title: Pandas Condtitional Selection and Modifying DataFrames
+title: Pandas Conditional Selection and Modifying DataFrames
 challengeType: 11
 isHidden: false
 videoId: BFlH0fN5xRQ