style(RichTextEditor): reduce size between paragraph

Author: dewita

assets/css/_markdown-style.scss

@@ -31,8 +31,8 @@
   }
 
   p {
-    margin-bottom: 25px;
-    margin-top: 25px;
+    margin-bottom: 15px;
+    margin-top: 15px;
 
     > code, .title-ref {
       background-color: lighten($TERNARY_COLOR, 25);
@@ -44,8 +44,8 @@
   }
 
   pre {
-    margin-top: 30px;
-    margin-bottom: 30px;
+    margin-top: 15px;
+    margin-bottom: 15px;
     overflow-x: scroll;
     background-color: lighten($GREY, 63);
     padding: 20px;