Update README.md

ChrisMayor · web-flow · commit 8ead0fe8ed08 · 2020-01-08T08:47:40.000+01:00
diff --git a/README.md b/README.md
@@ -53,10 +53,10 @@ tile4
 ````
 ### Input: tilexIsNull : boolean
 ````
-tile1
-tile2
-tile3
-tile4
+tile1IsNull
+tile2IsNull
+tile3IsNull
+tile4IsNull
 ````
 ## How to run / API sample
 
