link to Extending Racket

diff --git a/_learning_scheme.mdwn b/_learning_scheme.mdwn
index bb78a16..35190fa 100644 (file)
--- a/_learning_scheme.mdwn
+++ b/_learning_scheme.mdwn
@@ -67,6 +67,7 @@ the [Stepper](http://docs.racket-lang.org/stepper/index.html)
 
 
 <!-- -->
+*   [[Extending Racket]] <!-- this site -->
 *   Typed Racket [Guide](http://docs.racket-lang.org/ts-guide/index.html) |
 [Reference](http://docs.racket-lang.org/ts-reference/index.html)
 *   [Lazy Racket](http://docs.racket-lang.org/lazy/index.html)