fix SteamID url in README

README.rst

@@ -11,7 +11,7 @@ Key features
 
 * `SteamAuthenticator <http://steam.readthedocs.io/en/latest/api/steam.guard.html>`_ - enable/disable/manage 2FA on account and generate codes
 * `SteamClient <http://steam.readthedocs.io/en/latest/api/steam.client.html>`_ - communication with the steam network based on ``gevent``.
-* `SteamID <http://steam.readthedocs.io/en/latest/api/steam.client.html>`_  - convert between the various ID representations with ease
+* `SteamID <http://steam.readthedocs.io/en/latest/api/steam.steamid.html>`_  - convert between the various ID representations with ease
 * `WebAPI <http://steam.readthedocs.io/en/latest/api/steam.webapi.html>`_ - simple API for Steam's Web API with automatic population of interfaces
 * `WebAuth <http://steam.readthedocs.io/en/latest/api/steam.webauth.html>`_ - authentication for access to ``store.steampowered.com`` and ``steamcommunity.com``