Updated Large-scale multi-label text classification example for Keras v3

Author: lpizzinidev

Diff for: examples/nlp/.DS_Store

@@ -30,8 +30,9 @@
 ## Imports
 """
 
-from tensorflow.keras import layers
-from tensorflow import keras
+import keras
+from keras import layers
+
 import tensorflow as tf
 
 from sklearn.model_selection import train_test_split