fixed DRY

Author: johnpapa

public/docs/ts/latest/guide/style-guide.jade

@@ -890,7 +890,7 @@ a(href="#toc") Back to top
 
 .l-main-section
 :marked
-  ### T-DRY (Try to Stay to DRY)
+  ### T-DRY (Try to be DRY)
   <a id="04-05"></a>
   #### Style 04-05