Merge pull request #1178 from speedyankur/langfuse-doc-update

doc: updated langfuse ver 1.14 in pip install cmd

docs/my-website/docs/observability/langfuse_integration.md

@@ -15,7 +15,7 @@ join our [discord](https://discord.gg/wuPM9dRgDw)
 ## Pre-Requisites
 Ensure you have run `pip install langfuse` for this integration
 ```shell
-pip install langfuse litellm
+pip install langfuse==1.14.0 litellm
 ```
 
 ## Quick Start

docs/my-website/docs/proxy/logging.md

@@ -461,7 +461,7 @@ We will use the `--config` to set `litellm.success_callback = ["langfuse"]` this
 **Step 1** Install langfuse
 
 ```shell
-pip install langfuse
+pip install langfuse==1.14.0
 ```
 
 **Step 2**: Create a `config.yaml` file and set `litellm_settings`: `success_callback`