fix: replace .english.md extension with .md

curriculum/challenges/english/01-responsive-web-design/basic-html-and-html5/comment-out-html.md

@@ -0,0 +1,70 @@
+---
+id: bad87fee1348bd9aedf08804
+title: Comment out HTML
+challengeType: 0
+videoUrl: 'https://scrimba.com/p/pVMPUv/cGyGbca'
+forumTopicId: 16782
+---
+
+## Description
+<section id='description'>
+Remember that in order to start a comment, you need to use <code>&#60;!--</code> and to end a comment, you need to use <code>--&#62;</code>
+Here you'll need to end the comment before your <code>h2</code> element begins.
+</section>
+
+## Instructions
+<section id='instructions'>
+Comment out your <code>h1</code> element and your <code>p</code> element, but not your <code>h2</code> element.
+</section>
+
+## Tests
+<section id='tests'>
+
+```yml
+tests:
+  - text: Your <code>h1</code> element should be commented out so that it is not visible on the page.
+    testString: assert(($("h1").length === 0));
+  - text: Your <code>h2</code> element should not be commented out so that it is visible on the page.
+    testString: assert(($("h2").length > 0));
+  - text: Your <code>p</code> element should be commented out so that it is not visible on the page.
+    testString: assert(($("p").length === 0));
+  - text: Each of your comments should be closed with <code>--&#62;</code>.
+    testString: assert(code.match(/[^fc]-->/g).length > 1);
+  - text: You should not change the order of the <code>h1</code> <code>h2</code> or <code>p</code> in the code.
+    testString: assert((code.match(/<([a-z0-9]){1,2}>/g)[0]==="<h1>" && code.match(/<([a-z0-9]){1,2}>/g)[1]==="<h2>" && code.match(/<([a-z0-9]){1,2}>/g)[2]==="<p>") );
+
+```
+
+</section>
+
+## Challenge Seed
+<section id='challengeSeed'>
+
+<div id='html-seed'>
+
+```html
+<!--
+<h1>Hello World</h1>
+
+<h2>CatPhotoApp</h2>
+
+<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
+-->
+```
+
+</div>
+
+
+
+</section>
+
+## Solution
+<section id='solution'>
+
+```html
+<!--<h1>Hello World</h1>-->
+<h2>CatPhotoApp</h2> 
+<!--<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p> -->
+```
+
+</section>