move KEP process proposal to architecture directory.

...also change filename to match title

Author: calebamiles

contributors/design-proposals/kep-development-process.md renamed to contributors/design-proposals/architecture/kubernetes-enhancement-proposal-process.md

@@ -1,4 +1,4 @@
-# Kubernetes Enhancement Proposal (KEP) Process
+# Kubernetes Enhancement Proposal Process
 
 ## Metadata
 ```
@@ -34,6 +34,7 @@ metadata:
 ## Summary
 
 A standardized development process for Kubernetes is proposed in order to:
+
 - provide a common structure for proposing changes to Kubernetes
 - ensure that the motivation for a change is clear
 - allow for the enumeration stability milestones and stability graduation
@@ -51,6 +52,9 @@ A standardized development process for Kubernetes is proposed in order to:
   completion across one or more releases while stakeholders are adequately
   represented throughout the process
 
+This process is supported by a unit of work called a Kubernetes Enhancement
+Proposal or KEP.
+
 ## Motivation
 
 For cross project SIGs such as SIG PM and SIG Release an abstraction beyond a