Update launch_ragflow_from_source.md (#4005)

update install poetry full package

- [x] Documentation Update

docs/guides/develop/launch_ragflow_from_source.md

@@ -48,10 +48,14 @@ cd ragflow/
    ```
 
 3. Install Python dependencies:
-
+   - slim:
    ```bash
    ~/.local/bin/poetry install --sync --no-root
    ```
+   - full:
+   ```bash
+   ~/.local/bin/poetry install --sync --no-root --with full
+   ```
    *A virtual environment named `.venv` is created, and all Python dependencies are installed into the new environment.*
 
 ### Launch Third-party Services
@@ -138,4 +142,4 @@ In your web browser, enter `http://127.0.0.1:<PORT>/`, ensuring the port number
 2. Stop the RAGFlow backend service:
    ```bash
    pkill -f "docker/entrypoint.sh"
-   ```
+   ```