Update cmdline --enable-dp-attention help string for Qwen 2/3 Moe models. (#6524)

Signed-off-by: miter <miterv@outlook.com>

python/sglang/srt/server_args.py

@@ -1138,7 +1138,7 @@ class ServerArgs:
         parser.add_argument(
             "--enable-dp-attention",
             action="store_true",
-            help="Enabling data parallelism for attention and tensor parallelism for FFN. The dp size should be equal to the tp size. Currently only DeepSeek-V2 is supported.",
+            help="Enabling data parallelism for attention and tensor parallelism for FFN. The dp size should be equal to the tp size. Currently DeepSeek-V2 and Qwen 2/3 MoE models are supported.",
         )
         parser.add_argument(
             "--enable-dp-lm-head",