Reword -n -N help.

Author: gwsw

Diff for: less.hlp

@@ -161,8 +161,10 @@
                   Ignore the LESSOPEN environment variable.
   -m  -M  ....  --long-prompt  --LONG-PROMPT
                   Set prompt style.
-  -n  -N  ....  --line-numbers  --LINE-NUMBERS
-                  Don't use line numbers.
+  -n .........  --line-numbers
+                  Suppress line numbers in prompts and messages.
+  -N .........  --LINE-NUMBERS
+                  Display line number at start of each line.
   -o [_f_i_l_e]  .  --log-file=[_f_i_l_e]
                   Copy to log file (standard input only).
   -O [_f_i_l_e]  .  --LOG-FILE=[_f_i_l_e]