we seem to only able to support 1 file

locale/en_US.json

@@ -18,7 +18,7 @@
     "上传了": "Uploaded",
     "上传到 OpenAI 后自动填充": "Automatically filled after uploading to OpenAI",
     "上传到OpenAI": "Upload to OpenAI",
-    "上传文件": "Upload files",
+    "上传文件": "Upload a file",
     "仅供查看": "For viewing only",
     "从Prompt模板中加载": "Load from Prompt Template",
     "从列表中加载对话": "Load dialog from list",