[Doc] CLI Args Naming Style Correction (#1750)

Signed-off-by: Didan Deng <33117903+wtomin@users.noreply.github.com>

docs/features/custom_pipeline.md

@@ -115,7 +115,7 @@ python image_edit.py \
     --image cherry_blossom.jpg \
     --prompt "Let this mascot dance under the moon, surrounded by floating stars" \
     --output output_image_edit.png \
-    --num_inference_steps 10
+    --num-inference-steps 10
 ```
 
 ## Advanced Usage

docs/user_guide/diffusion/quantization/gguf.md

@@ -136,9 +136,9 @@ python examples/offline_inference/text_to_image/text_to_image.py \
   --height 768 \
   --width 1360 \
   --seed 42 \
-  --cfg_scale 4.0 \
-  --num_images_per_prompt 1 \
-  --num_inference_steps 4 \
+  --cfg-scale 4.0 \
+  --num-images-per-prompt 1 \
+  --num-inference-steps 4 \
   --output outputs/flux2_klein_4b.png
 ```
 
@@ -152,9 +152,9 @@ python examples/offline_inference/text_to_image/text_to_image.py \
   --height 768 \
   --width 1360 \
   --seed 42 \
-  --cfg_scale 4.0 \
-  --num_images_per_prompt 1 \
-  --num_inference_steps 4 \
+  --cfg-scale 4.0 \
+  --num-images-per-prompt 1 \
+  --num-inference-steps 4 \
   --output outputs/flux2_klein_4b_gguf.png
 ```