fix reference to index document

svn path=/trunk/icecast/; revision=5752

README

@@ -47,7 +47,7 @@ A sample config file will be placed in /usr/local/etc (on UNIX) or in
 the current working directory (on Win32) and is called icecast.xml
 
 Documentation for icecast is available in the doc directory, by 
-viewing doc/icecast2_TOC.html in a browser.
+viewing doc/index.html in a browser.
 
 Please email us at icecast@xiph.org or icecast-dev@xiph.org, or come and see
 us at irc.freenode.net, channel #icecast, if you have any troubles.