document -D flag

Reference: /n/atom/patch/applied/findcapd
Date: Mon Feb 10 16:31:10 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/man/1/find	Mon Feb 10 16:31:04 2014
+++ /sys/man/1/find	Mon Feb 10 16:31:04 2014
@@ -4,7 +4,7 @@
 .SH SYNOPSIS
 .B find 
 [
-.B -1dfq
+.B -1Ddfq
 ] 
 .I dir ...
 .SH DESCRIPTION
@@ -13,6 +13,8 @@
 Specifying
 .B -d
 prints only directories, 
+.B -D
+prints only files,
 .B -f
 supresses warnings, while
 .B -q