Fix some broken and incorrect links in the docs.

common/locale/en-US/developer.xml

@@ -10,7 +10,7 @@
     title="&dactyl.appName; Developer information"
     xmlns="&xmlns.dactyl;"
     xmlns:html="&xmlns.html;">
-<h1 tag="developer-information">Developer information</h1>
+<h1 tag="developer-information developer">Developer information</h1>
 <toc start="2"/>
 
 <h2 tag="writing-docs documentation">Writing documentation</h2>