Fix typo. Thanks to Thorsten.
Merged revisions 46112 via svnmerge from https://svn.boost.org/svn/boost/branches/unordered/trunk
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r46112 | danieljames | 2008-06-04 13:34:29 +0100 (Wed, 04 Jun 2008) | 1 line
Fix copy and paste error in the max_load_factor documentation.