[diffusion] doc: update docs architecture (#27767)

docs_new/docs/sglang-diffusion/api/cli.mdx

@@ -83,7 +83,7 @@ Use `sglang generate --help` and `sglang serve --help` for the full argument lis
 - `--sp-degree {N}`: sequence parallelism size
 - `--ulysses-degree {N}` and `--ring-degree {N}`: USP parallelism controls
 - `--enable-cfg-parallel {true|false}`: enable or explicitly disable CFG parallelism
-- `--attention-backend {BACKEND}`: attention backend for native SGLang pipelines
+- `--attention-backend {BACKEND}`: attention backend for native SGLang and diffusers pipelines
 - `--component-attention-backends {MAP}`: per-component attention backend overrides, for example `text_encoder=torch_sdpa,transformer=fa`
 - `--attention-backend-config {CONFIG}`: attention backend configuration
 
@@ -124,7 +124,7 @@ model_path: FastVideo/FastHunyuan-diffusers
 prompt: A beautiful woman in a red dress walking down a street
 output_path: outputs/
 num_gpus: 2
-sp_size: 2
+sp_degree: 2
 tp_size: 1
 num_frames: 45
 height: 720
@@ -262,7 +262,7 @@ Use `--backend diffusers` to force vanilla diffusers pipelines when no native SG
       <td>Choose native SGLang, force native, or force diffusers</td>
     </tr>
     <tr>
-      <td><code>--diffusers-attention-backend</code></td>
+      <td><code>--attention-backend</code></td>
       <td><code>flash</code>, <code>_flash_3_hub</code>, <code>sage</code>, <code>xformers</code>, <code>native</code></td>
       <td>Attention backend for diffusers pipelines</td>
     </tr>
@@ -301,7 +301,7 @@ sglang generate \
   --model-path AIDC-AI/Ovis-Image-7B \
   --backend diffusers \
   --trust-remote-code \
-  --diffusers-attention-backend flash \
+  --attention-backend flash \
   --prompt "A serene Japanese garden with cherry blossoms" \
   --height 1024 \
   --width 1024 \