Update tenses in Uno 4 Relays Shield product.md

Author: arduinohatesme

content/hardware/02.uno/shields/4-relays-shield/product.md

@@ -8,4 +8,5 @@ forumCategorySlug: '/hardware/12'
 sku: [A000110]
 ---
 
-The Arduino 4 Relays Shield allows your Arduino driving high power loads.
+
+The Arduino 4 Relays Shield allows your Arduino to drive high power loads.