build: typo fix in configure.ac.
build: typo fix in configure.ac.

AnilRamachandran/aravis,lu-zero/aravis,lu-zero/aravis,AnilRamachandran/aravis,lu-zero/aravis,lu-zero/aravis,AnilRamachandran/aravis,lu-zero/aravis,AravisProject/aravis,AnilRamachandran/aravis,AravisProject/aravis,AnilRamachandran/aravis,AravisProject/aravis,AravisProject/aravis,AravisProject/aravis