update readme

Author: obinnascale3

README.md

@@ -246,6 +246,7 @@ Langtrace automatically captures traces from the following vendors:
 | Groq         | LLM             | :x:                | :white_check_mark:              |
 | Perplexity   | LLM             | :white_check_mark: | :white_check_mark:              |
 | Gemini       | LLM             | :x:                | :white_check_mark:              |
+| Mistral      | LLM             | :x:                | :white_check_mark:              |
 | Langchain    | Framework       | :x:                | :white_check_mark:              |
 | LlamaIndex   | Framework       | :white_check_mark: | :white_check_mark:              |
 | Langgraph    | Framework       | :x:                | :white_check_mark:              |