Fix more tutorial errata.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6516 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on July 12, 2008
73Q4BHPBGI2ZNYYHY3QBHLFAPI7PCBIGUIVK2I5IK7HB3OHTFXFQC
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