fixed typo in readme

README.md

@@ -36,9 +36,9 @@ Note: to distinguish Together models from the rest, you'll need to add "together
 
 ## LLM Providers
 By default, we support LLMs through OpenAI API. However, feel free to use other LLM providers. Make sure to install the necessary package for it. Here's list of packages required for alternative LLM providers we support:
-- `pip install langchain_together` to use models from TogetherAI
-- `pip install langchain_anthropic` to use models from Anthropic
-- `pip install langchain_fireworks` to use models from Fireworks
+- `pip install langchain-together` to use models from TogetherAI
+- `pip install langchain-anthropic` to use models from Anthropic
+- `pip install langchain-fireworks` to use models from Fireworks
 
 
 ## Contributing