fix: Conditionally render subtitle

frappe/website/web_template/section_with_cta/section_with_cta.html

@@ -1,7 +1,9 @@
 <div class="section-cta-container">
 	<div class="section-cta">
 		<h2 class="title">{{ title }}</h2>
+		{%- if subtitle -%}
 		<p class="subtitle">{{ subtitle }}</p>
+		{%- endif -%}
 		<div class="mt-4">
 			<a href="{{ cta_url }}" class="btn btn-lg btn-primary">{{ cta_label }}</a>
 		</div>