issue#4082 base_language had wrong code comment that it was using gpt… (#4084)

…3 to tokenize text instead of gpt-2

Co-authored-by: Pulkit <pulkit.mehta@catylex.com>

langchain/base_language.py

@@ -25,7 +25,7 @@ def _get_num_tokens_default_method(text: str) -> int:
     # create a GPT-2 tokenizer instance
     tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
 
-    # tokenize the text using the GPT-3 tokenizer
+    # tokenize the text using the GPT-2 tokenizer
     tokenized_text = tokenizer.tokenize(text)
 
     # calculate the number of tokens in the tokenized text