Docs: readme update

Author: natashadsouza

docs/technical_tutorial/README.md

@@ -2,6 +2,7 @@
 
 Refer these documents as a guide to all other relevant documents for the version of Apollo that you would like to build out.
 
+- [Apollo 5.0](apollo_5.0_technical_tutorial.md)
 - [Apollo 3.5](apollo_3.5_technical_tutorial.md)
 - [Apollo 3.0](apollo_3.0_technical_tutorial.md)
 - [Apollo 3.0 cn](apollo_3.0_technical_tutorial_cn.md)