fix the android doc markup (#525)

waynema · KazuCocoa · commit 9de862ca6440 · 2017-04-01T22:38:20.000+09:00
diff --git a/docs/android_docs.md b/docs/android_docs.md
@@ -609,11 +609,11 @@ Set implicit wait to zero.
 
 Set implicit wait. Default to @default_wait.
 
-```ruby`
+```ruby
 set_wait 2
 set_wait # @default_wait
 
-````
+```
 
 __Parameters:__
 
