docs: remove duplicate

Author: vkarpov15

docs/source/index.js

@@ -100,7 +100,6 @@ docs['docs/lodash.md'] = { title: 'Using Mongoose with Lodash', markdown: true }
 docs['docs/incompatible_packages.md'] = { title: 'Known Incompatible npm Packages', markdown: true };
 docs['docs/check-version.md'] = { title: 'How to Check Your Mongoose Version', markdown: true };
 docs['docs/version-support.md'] = { title: 'Version Support', markdown: true };
-docs['docs/shared-schemas.md'] = { title: 'Sharing Schemas Between Mongoose Projects', markdown: true };
 
 for (const props of Object.values(docs)) {
   props.jobs = jobs;