fix: update API URL for watch2gether (#527)

Author: sloria

lib/meetings/__init__.py

@@ -145,7 +145,7 @@ async def create_watch2gether(api_key: str, video_url: str | None = None) -> str
     """Create and return a watch2gether URL via the watch2gether API."""
     async with aiohttp.ClientSession() as client:
         payload = {"w2g_api_key": api_key, "share": video_url}
-        resp = await client.post("https://w2g.tv/rooms/create.json", json=payload)
+        resp = await client.post("https://api.w2g.tv/rooms/create.json", json=payload)
     resp.raise_for_status()
     data = await resp.json()
     stream_key = data["streamkey"]