Update README.md for broken link (#1107)

Author: gaikwadrahul8

addition-rnn/README.md

@@ -6,7 +6,7 @@ numbers, but it makes a fun example.
 
 Note: this example is a port of the Keras addition RNN example with a UI.
 
-You can find the original Keras python code [here](https://github.com/keras-team/keras/blob/master/examples/addition_rnn.py).
+You can find the original Keras python code [here](https://github.com/keras-team/keras-io/blob/master/examples/nlp/addition_rnn.py).
 
 [See this example live!](https://storage.googleapis.com/tfjs-examples/addition-rnn/dist/index.html)