connect.2, ioprio_set.2, dbopen.3, group.5, fifo.7: tfix

Fix nonstandard usage.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/connect.2

@@ -179,7 +179,7 @@ been completed.
 is not a valid open file descriptor.
 .TP
 .B ECONNREFUSED
-No-one listening on the remote address.
+No one listening on the remote address.
 .TP
 .B EFAULT
 The socket structure address is outside the user's address space.

man2/ioprio_set.2

@@ -314,7 +314,7 @@ Priority levels range from 0 (highest) to 7 (lowest).
 .BR IOPRIO_CLASS_IDLE " (3)"
 This is the idle scheduling class.
 Processes running at this level get I/O
-time only when no-one else needs the disk.
+time only when no one else needs the disk.
 The idle class has no class data.
 Attention is required when assigning this priority class to a process,
 since it may become starved if higher priority processes are

man3/dbopen.3

@@ -544,7 +544,7 @@ for any of the errors specified for the library routine
 The typedef
 .I DBT
 is a mnemonic for "data base thang", and was used
-because no-one could think of a reasonable name that wasn't already used.
+because no one could think of a reasonable name that wasn't already used.
 .PP
 The file descriptor interface is a kludge and will be deleted in a
 future version of the interface.

man5/group.5

@@ -57,7 +57,7 @@ a list of the usernames that are members of this group, separated by commas.
 .SH BUGS
 As the 4.2BSD
 .BR initgroups (3)
-man page says: no-one seems to keep
+man page says: no one seems to keep
 .I /etc/group
 up-to-date.
 .SH SEE ALSO

man7/fifo.7

@@ -34,7 +34,7 @@ until the other end is opened also.
 .PP
 A process can open a FIFO in nonblocking mode.
 In this
-case, opening for read-only succeeds even if no-one has
+case, opening for read-only succeeds even if no one has
 opened on the write side yet and opening for write-only
 fails with
 .B ENXIO