CCM-11580: Update serve-oas command

Author: m-houston

package.json

@@ -62,7 +62,7 @@
     "publish-oas": "mkdir -p build && redocly bundle specification/api/notify-supplier-phase1.yml --dereferenced -k --remove-unused-components --ext json > build/notify-supplier.json",
     "serve": "npm run serve-html-docs",
     "serve-html-docs": "npx serve sdk/html -p 3050",
-    "serve-oas": "redocly preview-docs -p 5000 build/notify-supplier.json",
+    "serve-oas": "redocly preview -p 5001 -d specification/api",
     "serve-swagger-docs": "npx serve sdk/swagger -p 3051",
     "start": "npm run start --workspace frontend",
     "test:unit": "npm run test:unit --workspaces",