Add NSEdoc signal '---' to some scripts

scripts/allseeingeye-info.nse

@@ -28,6 +28,7 @@ http://sourceforge.net/projects/gameq/
 (relevant files: games.ini, packets.ini, ase.php)
 ]]
 
+---
 -- @usage
 -- nmap -sV <target>
 -- @usage

scripts/http-shellshock.nse

@@ -23,6 +23,7 @@ References:
 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6271
 ]]
 
+---
 -- @usage
 -- nmap -sV -p- --script http-shellshock <target>
 -- nmap -sV -p- --script http-shellshock --script-args uri=/cgi-bin/bin,cmd=ls <target>

scripts/knx-gateway-info.nse

@@ -18,7 +18,7 @@ license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
 categories = {"default", "discovery", "safe"}
 portrule = shortport.port_or_service(3671, "efcp", "udp")
 
---
+---
 --@output
 -- 3671/udp open|filtered efcp
 -- | knx-gateway-info:

scripts/ssl-dh-params.nse

@@ -21,7 +21,7 @@ to Logjam (CVE 2015-4000) and other weaknesses.
 Opportunistic STARTTLS sessions are established on services that support them.
 ]]
 
---
+---
 -- @usage
 -- nmap --script ssl-dh-params <target>
 --

scripts/ventrilo-info.nse

@@ -32,6 +32,7 @@ Original reversing of the protocol was done by Luigi Auriemma
 (http://aluigi.altervista.org/papers.htm#ventrilo).
 ]]
 
+---
 -- @usage
 -- nmap -sV <target>
 -- @usage