fix typo

Author: kristjanvalur

redis/asyncio/client.py

@@ -797,7 +797,7 @@ async def close(self) -> None:
         await self.aclose()
 
     async def reset(self) -> None:
-        """alias for aclose(), for backwards compatibility"""
+        """Alias for aclose(), for backwards compatibility"""
         await self.aclose()
 
     async def on_connect(self, connection: Connection):