Fix some typos in comments

code/qcommon/files.c

@@ -2208,7 +2208,7 @@ static int FS_AddFileToList( char *name, char *list[MAX_FOUND_FILES], int nfiles
 	}
 	for ( i = 0 ; i < nfiles ; i++ ) {
 		if ( !Q_stricmp( name, list[i] ) ) {
-			return nfiles;		// allready in list
+			return nfiles;		// already in list
 		}
 	}
 	list[nfiles] = CopyString( name );