Fix "el ds" typo in man pages

This fixes a typo that I introduced in 2014 when fixing glitches with
'-' and italics in man pages.  The typo is visible only when using
traditional troff (as opposed to groff-compatible processors).

date.1

@@ -5,7 +5,7 @@ date \- show and set date and time
 .if n .nh
 .if n .na
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B date
 [
 .B \*-u

newctime.3

@@ -4,7 +4,7 @@ asctime, ctime, difftime, gmtime, localtime, mktime \- convert date and time
 .SH SYNOPSIS
 .nf
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B #include <time.h>
 .PP
 .BR "extern char *tzname[];" " /\(** (optional) \(**/"

newstrftime.3

@@ -41,7 +41,7 @@ strftime \- format date and time
 .SH SYNOPSIS
 .nf
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B #include <time.h>
 .PP
 .B "size_t strftime(char *restrict buf, size_t maxsize,"

newtzset.3

@@ -4,7 +4,7 @@ tzset \- initialize time conversion information
 .SH SYNOPSIS
 .nf
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B #include <time.h>
 .PP
 .B timezone_t tzalloc(char const *TZ);

time2posix.3

@@ -4,7 +4,7 @@ time2posix, posix2time \- convert seconds since the Epoch
 .SH SYNOPSIS
 .nf
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B #include <time.h>
 .PP
 .B time_t time2posix(time_t t);

tzfile.5

@@ -10,7 +10,7 @@ tzfile \- timezone information
 \\$3\*(lq\\$1\*(rq\\$2
 ..
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 The timezone information files used by
 .BR tzset (3)
 are typically found under a directory with a name like

tzselect.8

@@ -3,7 +3,7 @@
 tzselect \- select a timezone
 .SH SYNOPSIS
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 .B tzselect
 [
 .B \*-c

zdump.8

@@ -17,7 +17,7 @@ zdump \- timezone dumper
 \\$3\*(lq\\$1\*(rq\\$2
 ..
 .ie \n(.g .ds - \f(CW-\fP
-.el ds - \-
+.el .ds - \-
 The
 .B zdump
 program prints the current time in each