doc: link to Czech translation of The Laws of Reflection

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5190045

doc/docs.html

@@ -134,6 +134,12 @@ Notable articles from the <a href="http://blog.golang.org/">Go Blog</a>.
 <li><a href="http://code.google.com/p/ac-me/downloads/detail?name=fango.pdf">Effective Go and Tutorial</a></li>
 </ul>
 
+<h3 id="docs_cz">Czech &mdash; Čeština</h3>
+
+<ul>
+<li><a href="http://www.abclinuxu.cz/clanky/google-go-pravidla-reflexe">Pravidla reflexe</a> - a translation of <a href="http://blog.golang.org/2011/09/laws-of-reflection.html">The Laws of Reflection</a>.</li>
+</ul>
+
 <h3 id="docs_fr">French &mdash; Français</h3>
 
 <ul>