Update readme

PiperOrigin-RevId: 269884242

official/README.md

@@ -57,7 +57,7 @@ installable Official Models package. This is being tracked in
 **NOTE:** Please make sure to follow the steps in the
 [Requirements](#requirements) section.
 
-### Natural Language Processing:
+### Natural Language Processing
 
 *   [bert](nlp/bert): A powerful pre-trained language representation model:
     BERT, which stands for Bidirectional Encoder Representations from

official/nlp/README.md

@@ -6,8 +6,10 @@ Natural Language Processing (NLP).
 The library currently contains TensorFlow 2.x implementations, pre-trained
 model weights, usage scripts and conversion utilities for the following models:
 
-* Bert
+* [Bert](bert)
 
 * [XLNet](xlnet)
 
-* Transformer for translation
+* GPT2 (comming soon)
+
+* [Transformer for translation](../transformer)