Fixes typo in sff.info

source/commands/sffinfocommand.cpp

@@ -48,7 +48,7 @@ vector<string> SffInfoCommand::setParameters(){
 string SffInfoCommand::getHelpString(){	
 	try {
 		string helpString = "";
-		helpString += "The sffinfo command reads a sff file and extracts the sequence data, or you can use it to parse a sfftxt file.\n";
+		helpString += "The sffinfo command reads a sff file and extracts the sequence data, or you can use it to parse a sff file.\n";
 		helpString += "The sffinfo command parameters are sff, fasta, qfile, accnos, flow, sfftxt, oligos, group, bdiffs, tdiffs, ldiffs, sdiffs, pdiffs, checkorient and trim. sff is required. \n";
 		helpString += "The sff parameter allows you to enter the sff file you would like to extract data from.  You may enter multiple files by separating them by -'s.\n";
 		helpString += "The fasta parameter allows you to indicate if you would like a fasta formatted file generated.  Default=True. \n";