wip: adds more to index

Author: jmgilman

docs/src/index.md

@@ -6,3 +6,4 @@ Our team uses a specific subset of technologies to build and deliver our service
 It's critical to understand what those tools are and how they interact together in the CI process.
 
 The quickest way to get started learning is by going through the [onboarding process](./onboarding/index.md).
+For more in-depth documentation, please review the [reference section](./reference/index.md).

docs/src/reference/index.md

@@ -8,4 +8,4 @@ A combination of these two systems is what ultimately constructs the whole pipel
 If you need help with troubleshooting the CI process, or have a desire to modify the process to meet a particular need, this section
 will prove helpful.
 It is broken up into the foundational components of the CI process, with each component getting an in-depth breakdown of how it
-works.
+works.