Minor module description updates for grammar.

modules/exploits/windows/browser/mozilla_firefox_xmlserializer.rb

@@ -19,7 +19,7 @@ class Metasploit3 < Msf::Exploit::Remote
 			'Name'           => 'Firefox XMLSerializer Use After Free',
 			'Description'    => %q{
 				This module exploits a vulnerability found on Firefox 17.0 (< 17.0.2), specifically
-				an use after free of an Element object, when using the serializeToStream method
+				a use-after-free of an Element object, when using the serializeToStream method
 				with a specially crafted OutputStream defining its own write function. This module
 				has been tested successfully with Firefox 17.0.1 ESR, 17.0.1 and 17.0 on Windows XP
 				SP3.

modules/post/osx/capture/keylog_recorder.rb

@@ -29,12 +29,12 @@ class Metasploit3 < Msf::Post
 		super(update_info(info,
 			'Name'          => 'OSX Capture Userspace Keylogger',
 			'Description'   => %q{
-				Logs all keyboard events except cmd-keys and GUI password input.
+				This module logs all keyboard events except cmd-keys and GUI password input.
 
 				Keylogs are transferred between client/server in chunks
 				every SYNCWAIT seconds for reliability.
 
-				Works by calling the Carbon GetKeys() hook using the DL lib
+				It works by calling the Carbon GetKeys() hook using the DL lib
 				in OSX's system Ruby. The Ruby code is executed in a shell
 				command using -e, so the payload never hits the disk.
 			},

modules/post/osx/manage/record_mic.rb

@@ -21,7 +21,7 @@ class Metasploit3 < Msf::Post
 		super(update_info(info,
 			'Name'          => 'OSX Manage Record Microphone',
 			'Description'   => %q{
-					This module will allow you to detect (with the LIST action) and
+					This module will allow the user to detect (with the LIST action) and
 					capture (with the RECORD action) audio inputs on a remote OSX machine.
 			},
 			'License'       => MSF_LICENSE,