Update pihole-FTL man-pages (#3883)

Extend latest options and adjust ordering to Web documentation

Ensure that all configuration options currently recognized by FTL 5.3.1
are properly documented in the man page of the configuration file.

Signed-off-by: Reto Gantenbein <reto.gantenbein@linuxmonk.ch>

manpages/pihole-FTL.8

@@ -1,4 +1,4 @@
-.TH "Pihole-FTL" "8" "pihole-FTL" "Pi-hole" "June 2018"
+.TH "Pihole-FTL" "8" "pihole-FTL" "Pi-hole" "November 2020"
 .SH "NAME"
 pihole-FTL - Pi-hole : The Faster-Than-Light (FTL) Engine
 .br
@@ -10,7 +10,7 @@ pihole-FTL - Pi-hole : The Faster-Than-Light (FTL) Engine
 .br
 \fBpihole-FTL test\fR
 .br
-\fBpihole-FTL -v\fR
+\fBpihole-FTL -v|-vv\fR
 .br
 \fBpihole-FTL -t\fR
 .br
@@ -22,6 +22,16 @@ pihole-FTL - Pi-hole : The Faster-Than-Light (FTL) Engine
 .br
 \fBpihole-FTL dnsmasq-test\fR
 .br
+\fBpihole-FTL regex-test str\fR
+.br
+\fBpihole-FTL regex-test str rgx\fR
+.br
+\fBpihole-FTL lua\fR
+.br
+\fBpihole-FTL luac\fR
+.br
+\fBpihole-FTL dhcp-discover\fR
+.br
 \fBpihole-FTL --\fR (\fBoptions\fR)
 .br
 
@@ -65,6 +75,11 @@ Command line arguments
     Don't start FTL, show only version
 .br
 
+\fB-vv\fR
+.br
+    Don't start FTL, show verbose version information of embedded applications
+.br
+
 \fB-t, tag\fR
 .br
     Don't start FTL, show only git tag
@@ -90,6 +105,31 @@ Command line arguments
     Test resolver config file syntax
 .br
 
+\fBregex-test str\fR
+.br
+    Test str against all regular expressions in the database
+.br
+
+\fBregex-test str rgx\fR
+.br
+    Test str against regular expression given by rgx
+.br
+
+\fBlua\fR
+.br
+    Start the embedded Lua interpreter
+.br
+
+\fBluac\fR
+.br
+    Execute the embedded Lua compiler
+.br
+
+\fBdhcp-discover\fR
+.br
+    Discover DHCP servers in the local network
+.br
+
 \fB--\fR  (options)
 .br
     Pass options to internal dnsmasq resolver