Fixed return value description in doxycomment.
Fixed return value description in doxycomment.

tonibm19/cuberite,kevinr/cuberite,tonibm19/cuberite,marvinkopf/cuberite,HelenaKitty/EbooMC,kevinr/cuberite,Haxi52/cuberite,marvinkopf/cuberite,Fighter19/cuberite,kevinr/cuberite,QUSpilPrgm/cuberite,Schwertspize/cuberite,tonibm19/cuberite,kevinr/cuberite,Fighter19/cuberite,QUSpilPrgm/cuberite,Frownigami1/cuberite,Schwertspize/cuberite,Haxi52/cuberite,ionux/MCServer,Fighter19/cuberite,birkett/MCServer,mc-server/MCServer,Haxi52/cuberite,ionux/MCServer,mc-server/MCServer,marvinkopf/cuberite,Fighter19/cuberite,Frownigami1/cuberite,QUSpilPrgm/cuberite,nounoursheureux/MCServer,mc-server/MCServer,tonibm19/cuberite,birkett/cuberite,Schwertspize/cuberite,Frownigami1/cuberite,marvinkopf/cuberite,HelenaKitty/EbooMC,nounoursheureux/MCServer,kevinr/cuberite,QUSpilPrgm/cuberite,birkett/cuberite,mc-server/MCServer,ionux/MCServer,birkett/MCServer,mc-server/MCServer,johnsoch/cuberite,tonibm19/cuberite,birkett/MCServer,tonibm19/cuberite,Frownigami1/cuberite,marvinkopf/cuberite,Haxi52/cuberite,Altenius/cuberite,ionux/MCServer,Schwertspize/cuberite,Schwertspize/cuberite,mc-server/MCServer,birkett/cuberite,HelenaKitty/EbooMC,Frownigami1/cuberite,nounoursheureux/MCServer,birkett/cuberite,HelenaKitty/EbooMC,Altenius/cuberite,birkett/cuberite,johnsoch/cuberite,johnsoch/cuberite,Fighter19/cuberite,Altenius/cuberite,nounoursheureux/MCServer,Altenius/cuberite,johnsoch/cuberite,HelenaKitty/EbooMC,Haxi52/cuberite,QUSpilPrgm/cuberite,birkett/cuberite,birkett/MCServer,Fighter19/cuberite,birkett/MCServer,marvinkopf/cuberite,nounoursheureux/MCServer,johnsoch/cuberite,nounoursheureux/MCServer,kevinr/cuberite,ionux/MCServer,birkett/MCServer,QUSpilPrgm/cuberite,Altenius/cuberite,Haxi52/cuberite,ionux/MCServer