Normalize NSEDoc documentation of scripts.

I made every script follow a standard form: it starts with the id, followed by
the description. The description is contained in [[ ]] delimiters. The
description is in the global description variable, not in a LuaDoc comment.
Other LuaDoc information such as @args and @usage follows the description in a
comment.

The first paragraph of each description is a a short summary of what the script
does. More detailed information, if any, is given in following paragraphs.

I also improved some wording and formatting in a few cases.

scripts/ripeQuery.nse

@@ -1,10 +1,8 @@
-require "comm"
-require "ipOps"
-
 id = "RIPE query"
 description = [[
-Connects to the RIPE database, extracts and prints the role: entry for the IP.
-\n
+Connects to the RIPE database and displays the role: entry for the target's IP
+address.
+\n\n
 This script uses an external database. Your IP address and the IP address of
 the target will be sent to whois.ripe.net.
 ]]
@@ -13,6 +11,9 @@ license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
 
 categories = {"discovery", "external"}
 
+require "comm"
+require "ipOps"
+
 hostrule = function(host, port)
 	return not ipOps.isPrivate(host.ip)
 end