Outdated homepage in README file

[Santiago Vila]

The README for indent-2.2.10 says:

  For complete documentation on the Web, please visit:

     http://myweb.freeserve.com/indent/beautify.html

which no longer exists.

I changed that to http://mysite.wanadoo-members.co.uk/indent/indent.html
for the debian package, but it does not work anymore, so this documentation
bug will reappear again.

Thanks.