Fix some grammatical errors in comments in net/

net/data/proxy_resolver_perftest/no-ads.pac

 //////////////////////////////////////////////////////////////////////////////
 //
 // John's No-ADS proxy auto configuration script
 //      http://www.schooner.com/~loverso/no-ads/
 //      loverso@schooner.com
 //      Questions/help web forum at http://www.network54.com/Hide/Forum/223428
 //
 // Copyright 1996-2004, John LoVerso.  All Rights Reserved.
 //
 //      Permission is given to use and distribute this file, as long as this
@@ skipping 74 matching lines @@
 
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // These are the basic steps needed to use "no-ads.pac".
 // Detailed instructions follow below!
 //
 // 1. Save this as a file (no-ads.pac) on your local disk
 //    (or, add it to your home page, if you have one)
 // 2. Select a no-ads "blackhole".
-// 3. Configure your browser to use this file as it's auto proxy configuration.
+// 3. Configure your browser to use this file as its auto proxy configuration.
 // 4. Clear your browser's cache
 //    (or else it may still show you ads it has saved on your disk).
 //
 
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // 1. SAVE THIS FILE
 //
 // Copy this file to your local machine; use your home directory (UNIX)
@@ skipping 83 matching lines @@
 //                      read b
 //                      echo HTTP/1.0 501 No Ads Accepted
 //                      echo ""
 //                      exit
 //
 //                Add this line to inetd.conf ('kill -HUP' inetd afterwards):
 //
 //                  3421 stream tcp nowait nobody /usr/local/lib/noproxy noproxy
 //
 //                This simple script doesn't work on Linux because of the
-//                (IMHO) broken way it's TCP stack works.  See the bottom of
+//                (IMHO) broken way its TCP stack works.  See the bottom of
 //                http://www.schooner.com/~loverso/no-ads/ for a complete copy
 //                of the `noproxy' shell script.
 //
 //                If always exec'ing a shell was expensive on your computer
 //                (it isn't on mine), then you could use a "wait"-style Perl
 //                script that would accept() incoming connections.
 //
 //              - Sean Burke has a black-hole proxy written in Perl script:
 //
 //                http://www.speech.cs.cmu.edu/~sburke/pub/black_hole_http_server.pl
@@ skipping 1143 matching lines @@
 //
 
 // eof
         //intelliserv.net
         //intellisrv.net
         //rambler.ru
         //rightmedia.net
         //calloffate.com
         //fairmeasures.com