Update documentation to reflect tokenizers refactor under transformers module

Author: Ankur-singh

docs/source/api_ref_modules.rst

@@ -48,10 +48,10 @@ model specific tokenizers.
     :toctree: generated/
     :nosignatures:
 
-    tokenizers.SentencePieceBaseTokenizer
-    tokenizers.TikTokenBaseTokenizer
-    tokenizers.ModelTokenizer
-    tokenizers.BaseTokenizer
+    transforms.tokenizers.SentencePieceBaseTokenizer
+    transforms.tokenizers.TikTokenBaseTokenizer
+    transforms.tokenizers.ModelTokenizer
+    transforms.tokenizers.BaseTokenizer
 
 Tokenizer Utilities
 -------------------
@@ -61,8 +61,8 @@ These are helper methods that can be used by any tokenizer.
     :toctree: generated/
     :nosignatures:
 
-    tokenizers.tokenize_messages_no_special_tokens
-    tokenizers.parse_hf_tokenizer_json
+    transforms.tokenizers.tokenize_messages_no_special_tokens
+    transforms.tokenizers.parse_hf_tokenizer_json
 
 
 PEFT Components

docs/source/basics/tokenizers.rst

@@ -168,7 +168,7 @@ For example, here we change the ``"<|begin_of_text|>"`` and ``"<|end_of_text|>"`
 Base tokenizers
 ---------------
 
-:class:`~torchtune.modules.tokenizers.BaseTokenizer` are the underlying byte-pair encoding modules that perform the actual raw string to token ID conversion and back.
+:class:`~torchtune.modules.transforms.tokenizers.BaseTokenizer` are the underlying byte-pair encoding modules that perform the actual raw string to token ID conversion and back.
 In torchtune, they are required to implement ``encode`` and ``decode`` methods, which are called by the :ref:`model_tokenizers` to convert
 between raw text and token IDs.
 
@@ -202,13 +202,13 @@ between raw text and token IDs.
             """
             pass
 
-If you load any :ref:`model_tokenizers`, you can see that it calls its underlying :class:`~torchtune.modules.tokenizers.BaseTokenizer`
+If you load any :ref:`model_tokenizers`, you can see that it calls its underlying :class:`~torchtune.modules.transforms.tokenizers.BaseTokenizer`
 to do the actual encoding and decoding.
 
 .. code-block:: python
 
     from torchtune.models.mistral import mistral_tokenizer
-    from torchtune.modules.tokenizers import SentencePieceBaseTokenizer
+    from torchtune.modules.transforms.tokenizers import SentencePieceBaseTokenizer
 
     m_tokenizer = mistral_tokenizer("/tmp/Mistral-7B-v0.1/tokenizer.model")
     # Mistral uses SentencePiece for its underlying BPE
@@ -227,7 +227,7 @@ to do the actual encoding and decoding.
 Model tokenizers
 ----------------
 
-:class:`~torchtune.modules.tokenizers.ModelTokenizer` are specific to a particular model. They are required to implement the ``tokenize_messages`` method,
+:class:`~torchtune.modules.transforms.tokenizers.ModelTokenizer` are specific to a particular model. They are required to implement the ``tokenize_messages`` method,
 which converts a list of Messages into a list of token IDs.
 
 .. code-block:: python
@@ -259,7 +259,7 @@ is because they add all the necessary special tokens or prompt templates require
 .. code-block:: python
 
     from torchtune.models.mistral import mistral_tokenizer
-    from torchtune.modules.tokenizers import SentencePieceBaseTokenizer
+    from torchtune.modules.transforms.tokenizers import SentencePieceBaseTokenizer
     from torchtune.data import Message
 
     m_tokenizer = mistral_tokenizer("/tmp/Mistral-7B-v0.1/tokenizer.model")