Cleanup and move spec to /spec (#3)

* Move spec to /spec

* Fix lint

Author: nbarbettini

.github/workflows/api-lint.yml

@@ -13,4 +13,4 @@ jobs:
       - name: Install Redocly CLI
         run: npm install -g @redocly/cli@latest
       - name: Run linting
-        run: redocly lint "specification/**/openapi.json" --format=github-actions
+        run: redocly lint "spec/**/openapi.json" --format=github-actions

.redocly.lint-ignore.yaml

@@ -1,6 +1,6 @@
 # This file instructs Redocly's linter to ignore the rules contained for specific parts of your API.
 # See https://redocly.com/docs/cli/ for more information.
-specification/http/1.0/openapi.json:
+spec/http/1.0/openapi.json:
   no-empty-servers:
     - '#/openapi'
   operation-4xx-response: