Docs: Refactor Contribution Guide (#2690)

docs/backend/openai_api_embeddings.ipynb

@@ -20,14 +20,7 @@
    "source": [
     "## Launch A Server\n",
     "\n",
-    "The following code is equivalent to running this in the shell:\n",
-    "\n",
-    "```bash\n",
-    "python -m sglang.launch_server --model-path Alibaba-NLP/gte-Qwen2-7B-instruct \\\n",
-    "    --port 30000 --host 0.0.0.0 --is-embedding\n",
-    "```\n",
-    "\n",
-    "Remember to add `--is-embedding` to the command."
+    "Launch the server in your terminal and wait for it to initialize. Remember to add `--is-embedding` to the command."
    ]
   },
   {