fix: Fix CUDA_VISIBLE_DEVICES for agg_multimodal_epd.sh (#4888)

Author: krishung5

examples/backends/vllm/launch/agg_multimodal_epd.sh

@@ -80,7 +80,7 @@ python -m dynamo.vllm --multimodal-processor --enable-multimodal --model $MODEL_
 
 # run E/P/D workers
 CUDA_VISIBLE_DEVICES=0 python -m dynamo.vllm --multimodal-encode-worker --enable-multimodal --model $MODEL_NAME &
-CUDA_VISIBLE_DEVICES=0 python -m dynamo.vllm --multimodal-worker --enable-multimodal --enable-mm-embeds --model $MODEL_NAME $EXTRA_ARGS &
+CUDA_VISIBLE_DEVICES=1 python -m dynamo.vllm --multimodal-worker --enable-multimodal --enable-mm-embeds --model $MODEL_NAME $EXTRA_ARGS &
 
 # Wait for all background processes to complete
 wait