fix headline condition and line-height for image-text-row component. (#1017)

Co-authored-by: Jesse Borden <[email protected]>

Author: jesseaborden

_includes/new-includes/components/image-text-row.html

@@ -1,7 +1,7 @@
 <div
   class="image-text-row content-wrapper{% if include.background %} background{% endif %}"
 >
-  {% if include.headline %}
+  {% if include.content.headline %}
   <h2>{{ include.content.headline }}</h2>
   {% endif %}
   <div class="card-wrapper">

assets/stylesheets/new-stylesheets/pages/_get-started.scss

@@ -349,6 +349,7 @@
 
   h2 {
     font-size: 48px;
+    line-height: 1.2;
     margin-bottom: 44px;
     width: 100%;
     text-align: center;