typo fix

Author: MaoXianXin

site/en/tutorials/keras/regression.ipynb

@@ -626,7 +626,7 @@
         "id": "Z3q1I9TwnRSC"
       },
       "source": [
-        "Having configured the training configured, use Keras `Model.fit` to execute the training for 100 epochs:"
+        "Having configured the training configuration, use Keras `Model.fit` to execute the training for 100 epochs:"
       ]
     },
     {

site/en/tutorials/load_data/csv.ipynb

@@ -421,7 +421,7 @@
         "# Create a symbolic input\n",
         "input = tf.keras.Input(shape=(), dtype=tf.float32)\n",
         "\n",
-        "# Do a calculation using is\n",
+        "# Do a calculation using it\n",
         "result = 2*input + 1\n",
         "\n",
         "# the result doesn't have a value\n",