fix(challenge-md): Fix quotes that failed in the transform

curriculum/challenges/english/01-responsive-web-design/basic-css/cascading-css-variables.english.md

@@ -23,7 +23,7 @@ Define a variable named <code>--penguin-belly</code> in the <code>:root</code> s
 ```yml
 tests:
   - text: 'declare the <code>--penguin-belly</code> variable in the <code>:root</code> and assign it to <code>pink</code>.'
-    testString: 'assert(code.match(/:root\s*?{[\s\S]*--penguin-belly\s*?:\s*?pink\s*?;[\s\S]*}/gi), ''declare the <code>--penguin-belly</code> variable in the <code>:root</code> and assign it to <code>pink</code>.'');'
+    testString: 'assert(code.match(/:root\s*?{[\s\S]*--penguin-belly\s*?:\s*?pink\s*?;[\s\S]*}/gi), "declare the <code>--penguin-belly</code> variable in the <code>:root</code> and assign it to <code>pink</code>.");'
 
 ```
 
@@ -37,16 +37,16 @@ tests:
 ```html
 <style>
   :root {
-    
+
     /* add code below */
-    
+
     /* add code above */
   }
-  
+
   body {
     background: var(--penguin-belly, #c6faf1);
   }
-  
+
   .penguin {
     --penguin-skin: gray;
     --penguin-beak: orange;
@@ -57,7 +57,7 @@ tests:
     width: 300px;
     height: 300px;
   }
-  
+
   .right-cheek {
     top: 15%;
     left: 35%;
@@ -66,7 +66,7 @@ tests:
     height: 70%;
     border-radius: 70% 70% 60% 60%;
   }
-  
+
   .left-cheek {
     top: 15%;
     left: 5%;
@@ -75,7 +75,7 @@ tests:
     height: 70%;
     border-radius: 70% 70% 60% 60%;
   }
-  
+
   .belly {
     top: 60%;
     left: 2.5%;
@@ -84,7 +84,7 @@ tests:
     height: 100%;
     border-radius: 120% 120% 100% 100%;
   }
-  
+
   .penguin-top {
     top: 10%;
     left: 25%;
@@ -93,7 +93,7 @@ tests:
     height: 45%;
     border-radius: 70% 70% 60% 60%;
   }
-  
+
   .penguin-bottom {
     top: 40%;
     left: 23.5%;
@@ -102,7 +102,7 @@ tests:
     height: 45%;
     border-radius: 70% 70% 100% 100%;
   }
-  
+
   .right-hand {
     top: 0%;
     left: -5%;
@@ -113,7 +113,7 @@ tests:
     transform: rotate(45deg);
     z-index: -1;
   }
-  
+
   .left-hand {
     top: 0%;
     left: 75%;
@@ -124,7 +124,7 @@ tests:
     transform: rotate(-45deg);
     z-index: -1;
   }
-  
+
   .right-feet {
     top: 85%;
     left: 60%;
@@ -135,7 +135,7 @@ tests:
     transform: rotate(-80deg);
     z-index: -2222;
   }
-  
+
   .left-feet {
     top: 85%;
     left: 25%;
@@ -146,7 +146,7 @@ tests:
     transform: rotate(80deg);
     z-index: -2222;
   }
-  
+
   .right-eye {
     top: 45%;
     left: 60%;
@@ -155,7 +155,7 @@ tests:
     height: 17%;
     border-radius: 50%;
   }
-  
+
   .left-eye {
     top: 45%;
     left: 25%;
@@ -164,7 +164,7 @@ tests:
     height: 17%;
     border-radius: 50%;
   }
-  
+
   .sparkle {
     top: 25%;
     left: 15%;
@@ -173,7 +173,7 @@ tests:
     height: 35%;
     border-radius: 50%;
   }
-  
+
   .blush-right {
     top: 65%;
     left: 15%;
@@ -182,7 +182,7 @@ tests:
     height: 10%;
     border-radius: 50%;
   }
-  
+
   .blush-left {
     top: 65%;
     left: 70%;
@@ -191,7 +191,7 @@ tests:
     height: 10%;
     border-radius: 50%;
   }
-  
+
   .beak-top {
     top: 60%;
     left: 40%;
@@ -200,7 +200,7 @@ tests:
     height: 10%;
     border-radius: 50%;
   }
-  
+
   .beak-bottom {
     top: 65%;
     left: 42%;
@@ -209,7 +209,7 @@ tests:
     height: 10%;
     border-radius: 50%;
   }
-  
+
   .penguin * {
     position: absolute;
   }