Update readme.md

text track, opacity parameter needs to be a property of style
yuanqiying · Jun 1, 2017 · c40d6dd · c40d6dd
1 parent b152f29
commit c40d6dd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/readme.md b/readme.md
@@ -441,8 +441,8 @@ Configuration:
   style: {
     'font-size': 12,
     fill: 'black',
+    opacity: 1,
   },
-  opacity: 1,
 }
 ```