Update .github/copilot-instructions.md

Co-authored-by: Copilot <[email protected]>

Author: kmruiz

.github/copilot-instructions.md

@@ -20,7 +20,7 @@ and MongoDB Atlas accounts. It is built using TypeScript, Node.js and the offici
 
 - Zod for message and schema validation.
 - Express for the HTTP Transport implementation.
-- mongosh NodeDriverServiceProvider for connecting to MongoDB
+- mongosh NodeDriverServiceProvider for connecting to MongoDB.
 - vitest for testing.
 - @modelcontextprotocol/sdk for the protocol implementation.