Update 99-02_reference-material.md

fixes #105, fixes #106

99-appendix/99-02_reference-material.md

@@ -15,14 +15,12 @@
 ## Design Script
 
 * [Dynamo DS language guide v1](https://dynamobim.org/wp-content/uploads/forum-assets/colin-mccroneautodesk-com/07/10/Dynamo_language_guide_version_1.pdf)
-* [DesignScript user manual 0.1](http://designscript.io/DesignScript_user_manual_0.1.pdf)
 * [DesignScript documentation](https://dynamobim.org/wp-content/links/DesignScriptGuide.pdf)
 * [DesignScript class materials from BiLT conference](https://github.com/Amoursol/dynamoDesignScript) by [Sol Amour](https://github.com/Amoursol)
 
 ## Generative Design
 
-* [Generative Design main page](https://www.autodesk.com/solutions/refinery-beta)
-* [Generative Design beta project page](https://beta.autodesk.com/key/RefineryLanding)
+* [Generative Design main page](https://www.autodesk.com/solutions/generative-design/architecture-engineering-construction)
 
 ## Generative Design