Broken link in documentation in connect() parameter server_settings

[sergeyspatar]

In the documentation for connect() function, parameter server_settings has the following description:

An optional dict of server runtime parameters. Refer to PostgreSQL documentation for a list of supported options.

The link in the description returns error 404 Not found.

[samuelcolvin]

The link line is

asyncpg/asyncpg/connection.py

Line 1612 in aa67d61

a `list of supported options <server settings>`_.

But, there is at least one more 404 link on that page:

asyncpg/asyncpg/connection.py

Line 1503 in aa67d61

using `environment variables <postgres envvars>`_.

I think they need changing to

..._>`_