Update assets/css/custom.scss

Co-Authored-By: damaneice <[email protected]>

Author: Sophie Shepherd

assets/css/custom.scss

@@ -109,7 +109,7 @@ blockquote {
   h1 { @include h0-mktg }
 
   h3 {
-    @include h3-mktg;
+    @include h2-mktg;
     margin-top: $spacer-4;
     margin-bottom: $spacer-3;
     @include breakpoint(md) {