Fix env:IDE links for Cusp and Lispworks articles.

Author: jsmpereira

env:IDE.md

@@ -18,14 +18,14 @@ Open Source
 
 - [McClide](http://www.cliki.net/MCLIDE) (OSX) - Maintained.
 
-- [Cusp/Eclipse]( http://bitfauna.com/projects/cusp/ ) - Unmaintained. [Articulate-Lisp cusp article](cusp-setup.html)
+- [Cusp/Eclipse]( http://bitfauna.com/projects/cusp/ ) - Unmaintained. [Articulate-Lisp cusp article](./env:cusp-setup.html)
 
 - [Ufasoft]( http://ufasoft.com/lisp/ ) (Windows)  - Unmaintained.
 
 Non-open source
 ---
 
-- [LispWorks](http://www.lispworks.com/downloads/index.html) - Maintained. [Articulate-lisp LispWorks article](lispworks.html)
+- [LispWorks](http://www.lispworks.com/downloads/index.html) - Maintained. [Articulate-lisp LispWorks article](./env:lispworks-setup.html)
 - [Allegro](http://www.franz.com/downloads/clp/survey ) - Maintained.