Typo fix.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4637 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 25, 2008
GO242VCYZMGMPK5ILYRKUCRPMLL2NBXX26VAFB47HRK2CGI3D7QAC
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