fix: fix example

Author: thingsym

docs/example-dart-sass/card.html

@@ -14,6 +14,8 @@ <h1 class="header-title">Flexbox Grid Mixins</h1>
 
 <div class="container">
 
+<h1>Cards Layout</h1>
+
 <h2>Flex Cards</h2>
 
 <div class="cards">
@@ -39,7 +41,7 @@ <h2>Flex Cards with button</h2>
 </div>
 </div>
 
-<h2>Flex Cards with button (multiline)</h2>
+<h2>Flex Cards with button (Multi-line)</h2>
 
 <div class="cards with-button">
 <div class="card">

docs/example/card.html

@@ -14,6 +14,8 @@ <h1 class="header-title">Flexbox Grid Mixins</h1>
 
 <div class="container">
 
+<h1>Cards Layout</h1>
+
 <h2>Flex Cards</h2>
 
 <div class="cards">
@@ -39,7 +41,7 @@ <h2>Flex Cards with button</h2>
 </div>
 </div>
 
-<h2>Flex Cards with button (multiline)</h2>
+<h2>Flex Cards with button (Multi-line)</h2>
 
 <div class="cards with-button">
 <div class="card">