Reorganize contribution materials (#783)

CONTRIBUTING.md

@@ -1,4 +1,4 @@
-# Rubric
+# Welcome, AI Chef
 
 The OpenAI Cookbook is a community-driven resource aimed at sharing knowledge in a way that is accessible, engaging, and enriching for everyone. To ensure the quality of submissions, we have established a rubric that assesses each contribution on various areas.
 
@@ -8,7 +8,7 @@ We encourage contributors to familiarize themselves with this rubric before writ
 
 For additional guidelines on writing good documentation, refer to [What Makes Documentation Good](https://cookbook.openai.com/what_makes_documentation_good).
 
-## Template
+## Rubric
 
 | Criteria                      | Score |
 | ----------------------------- | ----- |
@@ -20,7 +20,7 @@ For additional guidelines on writing good documentation, refer to [What Makes Do
 | Usability                     |       |
 | Completeness                  |       |
 
-## Breakdown
+### Breakdown
 
 #### Relevance
 

registry.yaml

@@ -1,4 +1,4 @@
-# yaml-language-server: $schema=./admin/registry_schema.json
+# yaml-language-server: $schema=./.github/registry_schema.json
 
 # This file is used to generate cookbook.openai.com. It specifies which paths we
 # should build pages for, and indicates metadata such as tags, creation date and