locale.1: Use LC_TELEPHONE instead of LC_MESSAGES in the example

yesstr/nostr in LC_MESSAGES are planned to be changed at some
point [1], so it's better to provide an example which won't
be obsoleted by that change.

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=16975

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

man1/locale.1

@@ -153,19 +153,19 @@ $ \fBlocale \-ck date_fmt\fP
 LC_TIME
 date_fmt="%a %b %e %H:%M:%S %Z %Y"
 
-$ \fBlocale LC_MESSAGES\fP
-^[yY].*
-^[nN].*
-Yes
-No
+$ \fBlocale LC_TELEPHONE\fP
++%c (%a) %l
+(%a) %l
+11
+1
 UTF\-8
 
-$ \fBlocale \-k LC_MESSAGES\fP
-yesexpr="^[yY].*"
-noexpr="^[nN].*"
-yesstr="Yes"
-nostr="No"
-messages\-codeset="UTF\-8"
+$ \fBlocale \-k LC_TELEPHONE\fP
+tel_int_fmt="+%c (%a) %l"
+tel_dom_fmt="(%a) %l"
+int_select="11"
+int_prefix="1"
+telephone\-codeset="UTF\-8"
 .fi
 
 The following example compiles a custom locale from the