Update dead URL

Author: tribut

README.md

@@ -7,7 +7,7 @@ Iridium is a free, open, and libre browser modification of the Chromium code bas
 
 The Iridium code is currently not on GitHub. You find our repository at [https://git.iridiumbrowser.de/cgit.cgi/iridium-browser/](https://git.iridiumbrowser.de/cgit.cgi/iridium-browser/).
 
-See [https://iridiumbrowser.de/development](https://iridiumbrowser.de/development) for details.
+See [https://iridiumbrowser.de/development.html](https://iridiumbrowser.de/development.html) for details.
 
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