[FIX,DOC] Minor documentaiton bug in graph_algorithm.h.


git-svn-id: http://svn.seqan.de/seqan/trunk@14721 e6417c60-b987-48fd-844e-b20f0fcc1017
[FIX,DOC] Fixing documentation of kruskalsAlgorithm().


git-svn-id: http://svn.seqan.de/seqan/trunk@14722 e6417c60-b987-48fd-844e-b20f0fcc1017