amended headline mega to new class

package.json

@@ -15,7 +15,7 @@
     "@coopdigital/component-skipnav": "*",
     "@coopdigital/component-squircles": "*",
     "@coopdigital/component-tags": "*",
-    "@coopdigital/foundations": "^1.5.0",
+    "@coopdigital/foundations": "^1.6.0",
     "@coopdigital/foundations-buttons": "*",
     "@coopdigital/foundations-forms": "5.6",
     "@coopdigital/foundations-tables": "*",

src/examples/foundations/font-sizes.html

@@ -6,8 +6,8 @@
     <h1>Font sizes</h1> 
     <a href="https://github.com/coopdigital/coop-frontend/tree/master/packages/foundations">Go to the installation documentation</a>
     <div class="coop-u-padding-resp-16-8 coop-u-margin-resp-t-32-16"> 
-        <h1 class="coop-t-headline-upper coop-t-h-mega coop-u-brand">Heading Mega</p>
-        <h1 class="coop-t-headline coop-t-h-mega coop-u-brand">Heading Mega</p> 
+        <h1 class="coop-t-headline-upper coop-t-headline-mega coop-u-brand">Heading Mega</p>
+        <h1 class="coop-t-headline coop-t-headline-mega coop-u-brand">Heading Mega</p> 
         <h1 class="coop-t-headline-upper coop-u-brand">Heading 1</p>
         <h1 class="coop-t-headline coop-u-brand">Heading 1</p> 
         <h1 class="coop-t-h-mega">Heading mega</h1>
@@ -22,8 +22,8 @@ <h6>Heading 6</h6>
         <a href="">Link</a>  
     </div>
     {% highlight html %}
-    <h1 class="coop-t-headline-upper coop-t-h-mega coop-u-brand">Heading Mega</p>
-    <h1 class="coop-t-headline coop-t-h-mega coop-u-brand">Heading Mega</p> 
+    <h1 class="coop-t-headline-upper coop-t-headline-mega coop-u-brand">Heading Mega</p>
+    <h1 class="coop-t-headline coop-t-headline-mega coop-u-brand">Heading Mega</p> 
     <h1 class="coop-t-headline-upper coop-u-brand">Heading 1</p>
     <h1 class="coop-t-headline coop-u-brand">Heading 1</p> 
     <h1 class="coop-t-h-mega">Heading mega</h1>

src/foundations/font-sizes.html

@@ -343,7 +343,7 @@ <h6>Heading 6</h6>
                 </div> 
                 <div class="coop-l-grid__item coop-l-grid__item--large-6 coop-u-margin-b-32">
                     <h2>The Co-op headline type scale</h2>    
-                    <p class="coop-t-h-mega coop-t-headline-upper coop-u-brand">Heading mega</p>
+                    <p class="coop-t-headline-mega coop-t-headline-upper coop-u-brand">Heading mega</p>
                     <p class="coop-t-h1 coop-t-headline-upper coop-u-brand">Heading 1</p>
                     <p class="coop-t-h-mega coop-t-headline coop-u-brand">Heading mega</p>
                     <p class="coop-t-h1 coop-t-headline coop-u-brand">Heading 1</p>
@@ -356,7 +356,7 @@ <h3>Example combinations</h3>
                 <div class="el-c-pullout-content">
                     <div class="coop-l-grid">
                         <div class="coop-l-grid__item coop-l-grid__item--large-6 coop-u-margin-b-32">  
-                            <p class="coop-t-h-mega coop-t-headline-upper coop-u-brand">Heading mega</p>
+                            <p class="coop-t-headline-mega coop-t-headline-upper coop-u-brand">Heading mega</p>
                             <p class="coop-t-lead-p">Lead paragraph lead paragraph lead paragraph lead paragraph lead paragraph lead paragraph lead paragraph lead paragraph.</p>
                             <h2>Heading 2</h2>
                             <p>Paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph paragraph.</p>