💄 Add extra spacing on top of CTA

Before the fix #4712, the Call To Action (aka CTA) for "Quick Start - 5min" used to be after a 1.25rem spacing (20px).

The fix, dropped that spacing putting the CTA button to close from its preceding title. We just put back (part of) this spacing.

website/src/components/HomepageHeader/styles.module.css

@@ -20,6 +20,10 @@
   }
 }
 
+.subTitle {
+  margin-bottom: 1.25rem;
+}
+
 .subTitle .taglineBadges {
   display: flex;
   flex-direction: row;