fix typo

readme.md

@@ -21,7 +21,7 @@ Available variables:
 | AWS_DEFAULT_REGION     |                                    | REQUIRED - Only if LLM=claudev2 or embedding_model=aws                  |
 | OPENAI_API_KEY         |                                    | REQUIRED - Only if LLM=gpt-4 or LLM=gpt-3.5 or embedding_model=openai   |
 | GOOGLE_API_KEY         |                                    | REQUIRED - Only required when using GoogleGenai LLM or embedding model google-genai-embedding-001|
-| PUBLIC_API_BASE_URL    | http://localhost:8504              | OPTIONAL - URL to the Bot API endpoint                                  |
+| VITE_API_BASE_URL      | http://localhost:8504              | OPTIONAL - URL to the Bot API endpoint                                  |
 | LANGCHAIN_ENDPOINT     | "https://api.smith.langchain.com"  | OPTIONAL - URL to Langchain Smith API                                   |
 | LANGCHAIN_TRACING_V2   | false                              | OPTIONAL - Enable Langchain tracing v2                                  |
 | LANGCHAIN_PROJECT      |                                    | OPTIONAL - Langchain project name                                       |