Remove redundant --model flag from FLUX.2 doc example

Co-authored-by: evilsocket <86922+evilsocket@users.noreply.github.com>
Agent-Logs-Url: https://github.com/evilsocket/cake/sessions/1d988e97-987f-471e-9a69-bd4064990b8c

Author: Copilot

docs/image_generation.md

@@ -34,8 +34,7 @@ Faster 4B variant, 4 denoising steps, best at 512x512:
 ```sh
 cake run black-forest-labs/FLUX.2-klein-4B \
   "a fluffy orange cat sitting on a wooden table" \
-  --model-type image-model --image-model-arch flux \
-  --model black-forest-labs/FLUX.2-klein-4B
+  --model-type image-model --image-model-arch flux
 ```
 
 ### FLUX Arguments