fix: insert blank line after ```

search and replace ```\n< with ```\n\n< to ensure there's an empty line
before closing tags

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/ask-browsers-to-access-your-site-via-https-only-with-helmet.hsts.chinese.md

@@ -38,4 +38,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/avoid-inferring-the-response-mime-type-with-helmet.nosniff.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/configure-helmet-using-the-parent-helmet-middleware.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/disable-client-side-caching-with-helmet.nocache.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/disable-dns-prefetching-with-helmet.dnsprefetchcontrol.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/hash-and-compare-passwords-asynchronously.chinese.md

@@ -41,4 +41,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/hash-and-compare-passwords-synchronously.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/hide-potentially-dangerous-information-using-helmet.hidepoweredby.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/install-and-require-helmet.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/mitigate-the-risk-of-clickjacking-with-helmet.frameguard.chinese.md

@@ -38,4 +38,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/mitigate-the-risk-of-cross-site-scripting-xss-attacks-with-helmet.xssfilter.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/prevent-ie-from-opening-untrusted-html-with-helmet.ienoopen.chinese.md

@@ -36,4 +36,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/set-a-content-security-policy-with-helmet.contentsecuritypolicy.chinese.md

@@ -40,4 +40,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>

curriculum/challenges/chinese/09-information-security/information-security-with-helmetjs/understand-bcrypt-hashes.chinese.md

@@ -38,4 +38,5 @@ tests:
 ```js
 // solution required
 ```
-</section>
+
+/section>