Update docs/hub/spaces-sdks-docker-langfuse.md

Co-authored-by: Marc Klingen <[email protected]>

Author: jannikmaierhoefer

docs/hub/spaces-sdks-docker-langfuse.md

@@ -33,7 +33,7 @@ The Langfuse Hugging Face Space allows you to get up and running with a deployed
 1.2. Select **Docker** as the Space SDK
 1.3. Select **Langfuse** as the Space template
 1.4. Enable **persistent storage** to ensure your Langfuse data is persisted across restarts
-1.5. Change the **Environment Variables**:
+1.5. For a secure deployment, replace the default values of the **environment variables**:
    - `NEXTAUTH_SECRET`: Used to validate login session cookies, generate secret with at least 256 entropy using `openssl rand -base64 32`.
    - `SALT`: Used to salt hashed API keys, generate secret with at least 256 entropy using `openssl rand -base64 32`.
    - `ENCRYPTION_KEY`: Used to encrypt sensitive data. Must be 256 bits, 64 string characters in hex format, generate via: `openssl rand -hex 32`. You should overwrite the default value here for a secure deployment.