Fix some more typos and spelling errors

scripts/bjnp-discover.nse

@@ -1,5 +1,5 @@
 description = [[
-Retrievs printer or scanner information from a remote device supporting the
+Retrieves printer or scanner information from a remote device supporting the
 BJNP protocol. The protocol is known to be supported by network based Canon
 devices.
 ]]

scripts/broadcast-pim-discovery.nse

@@ -9,7 +9,7 @@ local math = require "math"
 local string = require "string"
 
 description = [[
-Discovers routers that are running PIM (Protocol Independant Multicast).
+Discovers routers that are running PIM (Protocol Independent Multicast).
 
 This works by sending a PIM Hello message to the PIM multicast address
 224.0.0.13 and listening for Hello messages from other routers.

scripts/http-icloud-sendmsg.nse

@@ -3,7 +3,7 @@ local stdnse = require "stdnse"
 local tab = require "tab"
 
 description = [[
-Sends a message to a iOS device throught the Apple MobileMe web service. The
+Sends a message to a iOS device through the Apple MobileMe web service. The
 device has to be registered with an Apple ID using the Find My Iphone
 application.
 ]]

scripts/http-slowloris.nse

@@ -8,7 +8,7 @@ local http = require "http"
 local comm = require "comm"
 
 description = [[
-Tests a web server for vulnerability to the Slowloris DoS attack by launching a Slowlaris attack.
+Tests a web server for vulnerability to the Slowloris DoS attack by launching a Slowloris attack.
 
 Slowloris was described at Defcon 17 by RSnake
 (see http://ha.ckers.org/slowloris/).

scripts/http-virustotal.nse

@@ -7,9 +7,9 @@ local tab = require "tab"
 local table = require "table"
 
 description = [[
-Checks whether a file has been determined as malware by virustotal. Virustotal
+Checks whether a file has been determined as malware by Virustotal. Virustotal
 is a service that provides the capability to scan a file or check a checksum
-against a number of the major AntiVirus vendors. The script uses the public
+against a number of the major antivirus vendors. The script uses the public
 API which requires a valid API key and has a limit on 4 queries per minute.
 A key can be acquired by registering as a user on the virustotal web page:
 * http://www.virustotal.com

scripts/ipv6-ra-flood.nse

@@ -5,8 +5,8 @@ local math = require "math"
 local string = require "string"
 local os = require "os"
 
-description = [[ Generates a flood of Router Adverisments (RA) with random source MAC addresses and IPv6 prefixes. Computers, which have stateless autoconfiguration enabled by default (every major OS), 
-will start to compute IPv6 suffix and update their routing table to reflect the accepted annoucement. This will cause 100% CPU usage on Windows and platforms, preventing to process other application requests.
+description = [[ Generates a flood of Router Advertisements (RA) with random source MAC addresses and IPv6 prefixes. Computers, which have stateless autoconfiguration enabled by default (every major OS), 
+will start to compute IPv6 suffix and update their routing table to reflect the accepted announcement. This will cause 100% CPU usage on Windows and platforms, preventing to process other application requests.
 
 Vulnerable platforms:
 * All Cisco IOS ASA with firmware < November 2010

scripts/oracle-brute-stealth.nse

@@ -12,7 +12,7 @@ local unpwdb = require "unpwdb"
 local openssl = stdnse.silent_require "openssl"
 
 description = [[
-Exploits the CVE-2012-3137 vulnerability, a weaknes in Oracle's
+Exploits the CVE-2012-3137 vulnerability, a weakness in Oracle's
 O5LOGIN authentication scheme.  The vulnerability exists in Oracle 11g
 R1/R2 and allows linking the session key to a password hash.  When
 initiating an authentication attempt as a valid user the server will