Doc: Update readme document (#6052)

### What problem does this PR solve?

Added GPU startup script in the readme document

### Type of change

- [x] Documentation Update

README.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

README_id.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

README_ja.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

README_ko.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

README_pt_br.md

 
     ```bash
     $ cd ragflow/docker
+    # Use CPU for embedding and DeepDoc tasks:
     $ docker compose -f docker-compose.yml up -d
+    
+    # To use GPU to accelerate embedding and DeepDoc tasks:
+    # docker compose -f docker-compose-gpu.yml up -d
     ```
 
     | Tag da imagem RAGFlow | Tamanho da imagem (GB) | Possui modelos de incorporação? | Estável?                 |

README_tzh.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

README_zh.md

 
    ```bash
    $ cd ragflow/docker
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |

docs/quickstart.mdx

    :::
 
    ```bash
+   # Use CPU for embedding and DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d
+
+   # To use GPU to accelerate embedding and DeepDoc tasks:
+   # docker compose -f docker-compose-gpu.yml up -d
    ```
 
 ```mdx-code-block