remove redundant comment

Author: grden

micropip/package_manager.py

@@ -164,9 +164,6 @@ async def install(
         >>> await micropip.install("snowballstemmer")
         >>> await micropip.install(["snowballstemmer", "mccabe"])
         >>> await micropip.install("numpy>=2.2.0")
-
-        For more details and advanced usage, see the user manual:
-        https://pyodide.org/en/stable/usage/loading-packages.html#micropip
         """
 
         with setup_logging().ctx_level(verbose) as logger: