Remove excess semicolon

$ make
g++ -O3    -c -o wikiq.o wikiq.cpp
wikiq.cpp: In function ‘void print_usage(char**)’:
wikiq.cpp:549:10: error: expected primary-expression before ‘<<’ token
make: *** [wikiq.o] Error 1
Merge branch 'patch-2' of github.com:nemobis/wikiq