Use Title Case in the Docs

docs/developers/arch/adr-001.md

-ADR 1: Component architecture for sidebar application
+ADR 1: Component Architecture for Sidebar Application
 =====================================================
 
 Context
@@ -36,7 +36,7 @@ controllerAs). Angular JS 1.5x introduced [explicit
 support](https://docs.angularjs.org/guide/component) for this architecture via
 `.component()`.
 
-### Components in the client
+### Components in the Client
 
 The client historically used traditional Angular 1.x methods of passing data
 between parts of the UI - properties on the scope inherited by child scopes and