Update future.md

pitr-ch · web-flow · commit 6a79be0645b4 · 2020-07-20T22:24:17.000+02:00
diff --git a/docs-source/future.md b/docs-source/future.md
@@ -80,7 +80,7 @@ class Ticker
   end
 end
 
-yahoo = Finance.new('YAHOO')
+yahoo = Ticker.new('YAHOO')
 future = Concurrent::Future.new { yahoo.update.suggested_symbols }
 future.add_observer(Ticker.new)
 future.execute
