Update transfer_learning.ipynb

Changed lr to learning_rate, which removes a deprecation warning.

Author: tilakrayal

site/en/r1/tutorials/images/transfer_learning.ipynb

@@ -364,7 +364,7 @@
       },
       "outputs": [],
       "source": [
-        "model.compile(optimizer=tf.keras.optimizers.RMSprop(lr=0.0001),\n",
+        "model.compile(optimizer=tf.keras.optimizers.RMSprop(learning_rate=0.0001),\n",
         "              loss='binary_crossentropy',\n",
         "              metrics=['accuracy'])"
       ]
@@ -569,7 +569,7 @@
       },
       "outputs": [],
       "source": [
-        "model.compile(optimizer = tf.keras.optimizers.RMSprop(lr=2e-5),\n",
+        "model.compile(optimizer = tf.keras.optimizers.RMSprop(learning_rate=2e-5),\n",
         "              loss='binary_crossentropy',\n",
         "              metrics=['accuracy'])"
       ]