Update README synopsis to use a less volatile site

Finishes #1120.

README.ja.rdoc

@@ -38,24 +38,25 @@ IRCのチャンネルはfreenodeの #nokogiri です。
 
   require 'nokogiri'
   require 'open-uri'
-
-  doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))
-
+
+  # Fetch and parse HTML document
+  doc = Nokogiri::HTML(open('http://www.nokogiri.org/tutorials/installing_nokogiri.html'))
+
   ####
   # Search for nodes by css
-  doc.css('h3.r a.l').each do |link|
+  doc.css('nav ul.menu li a').each do |link|
     puts link.content
   end
-  
+
   ####
   # Search for nodes by xpath
-  doc.xpath('//h3/a[@class="l"]').each do |link|
+  doc.xpath('//h2 | //h3').each do |link|
     puts link.content
   end
-  
+
   ####
   # Or mix and match.
-  doc.search('h3.r a.l', '//h3/a[@class="l"]').each do |link|
+  doc.search('code.sh', '//h2').each do |link|
     puts link.content
   end
 

README.rdoc

@@ -45,27 +45,24 @@ The IRC channel is #nokogiri on freenode.
   require 'nokogiri'
   require 'open-uri'
 
-  # Get a Nokogiri::HTML::Document for the page we’re interested in...
-
-  doc = Nokogiri::HTML(open('http://www.google.com/search?q=sparklemotion'))
-
-  # Do funky things with it using Nokogiri::XML::Node methods...
+  # Fetch and parse HTML document
+  doc = Nokogiri::HTML(open('http://www.nokogiri.org/tutorials/installing_nokogiri.html'))
 
   ####
   # Search for nodes by css
-  doc.css('h3.r a').each do |link|
+  doc.css('nav ul.menu li a').each do |link|
     puts link.content
   end
 
   ####
   # Search for nodes by xpath
-  doc.xpath('//h3/a').each do |link|
+  doc.xpath('//h2 | //h3').each do |link|
     puts link.content
   end
 
   ####
   # Or mix and match.
-  doc.search('h3.r a.l', '//h3/a').each do |link|
+  doc.search('code.sh', '//h2').each do |link|
     puts link.content
   end