doc: add JSON-RPC: a tale of interfaces article

Originally published on The Go Programming Language Blog, Abril 27, 2010.

http://blog.golang.org/2010/04/json-rpc-tale-of-interfaces.html

R=adg, r
CC=golang-dev
https://golang.org/cl/5920044
diff --git a/doc/docs.html b/doc/docs.html
index d949628..577166e 100644
--- a/doc/docs.html
+++ b/doc/docs.html
@@ -91,7 +91,7 @@
 
 <h4>Codewalks</h4>
 <p>
-Guided tours of Go programs. 
+Guided tours of Go programs.
 </p>
 <ul>
 <li><a href="/doc/codewalk/functions">First-Class Functions in Go</a></li>
@@ -102,7 +102,7 @@
 
 <h4>Language</h4>
 <ul>
-<li><a href="http://blog.golang.org/2010/04/json-rpc-tale-of-interfaces.html">JSON-RPC: a tale of interfaces</a></li>
+<li><a href="/doc/articles/json_rpc_tale_of_interfaces.html">JSON-RPC: a tale of interfaces</a></li>
 <li><a href="/doc/articles/gos_declaration_syntax.html">Go's Declaration Syntax</a></li>
 <li><a href="/doc/articles/defer_panic_recover.html">Defer, Panic, and Recover</a></li>
 <li><a href="/doc/articles/concurrency_patterns.html">Go Concurrency Patterns: Timing out, moving on</a></li>
@@ -167,7 +167,7 @@
 A presentation delivered by Rob Pike and Russ Cox at Google I/O 2010.  It
 illustrates how programming in Go differs from other languages through a set of
 examples demonstrating features particular to Go.  These include concurrency,
-embedded types, methods on any type, and program construction using interfaces. 
+embedded types, methods on any type, and program construction using interfaces.
 </p>
 
 <h3 id="practical_go_programming"><a href="http://www.youtube.com/watch?v=2-pPAvqyluI">Practical Go Programming</a><font color="red">*</font></h3>
@@ -188,7 +188,7 @@
 <h2 id="nonenglish">Non-English Documentation</h2>
 
 <p>
-See the <a href="http://code.google.com/p/go-wiki/wiki/NonEnglish">NonEnglish</a> page 
+See the <a href="http://code.google.com/p/go-wiki/wiki/NonEnglish">NonEnglish</a> page
 at the <a href="http://code.google.com/p/go-wiki/wiki">Go Wiki</a> for localized
 documentation.
 </p>
@@ -198,7 +198,7 @@
 <img class="gopher" src="/doc/gopher/project.png"/>
 
 <h3 id="mailinglist"><a href="http://groups.google.com/group/golang-nuts">Go Nuts Mailing List</a></h3>
-<p>The <a href="http://groups.google.com/group/golang-nuts">golang-nuts</a> 
+<p>The <a href="http://groups.google.com/group/golang-nuts">golang-nuts</a>
 mailing list is for general Go discussion.</p>
 
 <h3 id="projects"><a href="http://godashboard.appspot.com/project">Go Project Dashboard</a></h3>