Add pipeline_tag for that it can be used in pipeline

README.md

@@ -1,12 +1,13 @@
 ---
 license: apache-2.0
 language:
-  - en
+- en
 tags:
-  - ctranslate2
-  - fastchat-t5-3b
-  - quantization
-  - int8
+- ctranslate2
+- fastchat-t5-3b
+- quantization
+- int8
+pipeline_tag: text-generation
 ---
 
 # Model Card for FastChat-T5 3B Q8
@@ -56,4 +57,4 @@ print(output_text)
 
 The code is taken from https://opennmt.net/CTranslate2/guides/transformers.html#t5.
 
-The key method of the code above is `translate_batch`, you can find out [its supported parameters here](https://opennmt.net/CTranslate2/python/ctranslate2.Translator.html#ctranslate2.Translator.translate_batch).
+The key method of the code above is `translate_batch`, you can find out [its supported parameters here](https://opennmt.net/CTranslate2/python/ctranslate2.Translator.html#ctranslate2.Translator.translate_batch).