move config to beta directory

Author: bmuenzenmeyer

doc-kit.config.mjs beta/doc-kit.config.mjsdoc-kit.config.mjs renamed to beta/doc-kit.config.mjs

@@ -1,6 +1,6 @@
 export default {
   web: {
     remoteConfigUrl:
-      'https://raw.githubusercontent.com/nodejs/doc-kit/main/beta-docs.config.json',
+      'https://raw.githubusercontent.com/nodejs/doc-kit/main/beta/site.json',
   },
 };

beta-docs.config.json beta/site.jsonbeta-docs.config.json renamed to beta/site.json

@@ -16,7 +16,7 @@ node bin/cli.mjs generate \
   -v "$NODE_VERSION" \
   --type-map "./node/doc/type-map.json" \
   --index "./node/doc/api/index.md" \
-  --config-file "./doc-kit.config.mjs" \
+  --config-file "./beta/doc-kit.config.mjs" \
   --log-level debug
 
 cp ./node/doc/api/*.md "./out"