fix typo prompts (#2224)

python/sglang/srt/openai_api/adapter.py

@@ -1286,7 +1286,7 @@ def v1_embedding_request(all_requests, tokenizer_manager):
         else:
             prompt_kwargs = {"input_ids": prompt}
     else:
-        if isinstance(prompts[0], str) or isinstance(propmts[0][0], str):
+        if isinstance(prompts[0], str) or isinstance(prompts[0][0], str):
             prompt_kwargs = {"text": prompts}
         else:
             prompt_kwargs = {"input_ids": prompts}