[components] SectionTitle, css property 수정

Detail Notes :

1. gap → margin-right 수정

com.twin.app.shoptime/src/components/SectionTitle/SectionTitle.module.less

@@ -3,7 +3,6 @@
 
 .sectionTitle {
   .flex(@justifyCenter: flex-start);
-  gap: 12px;
   min-height: 50px;
   .font(@fontFamily: @baseFontBold, @fontSize: 42px);
   color: @COLOR_GRAY08;
@@ -11,6 +10,7 @@
   span {
     display: inline-block;
     .size(@w: 6px, @h: 36px);
+    margin-right: 12px;
     background-color: @PRIMARY_COLOR_RED;
   }
 }