Update .github/copilot-instructions.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: kmruiz

.github/copilot-instructions.md

@@ -6,7 +6,7 @@ and MongoDB Atlas accounts. It is built using TypeScript, Node.js and the offici
 
 ## Folder Structure
 
-- `/src`: Contains the source code of the MCP Server
+- `/src`: Contains the source code of the MCP Server.
 - `/src/tools`: Contains the implementation of MCP tools.
 - `/src/tools/atlas/`: Contains the implementation of MCP tools that are specific to MongoDB Atlas.
 - `/src/tools/mongodb/`: Contains the implementation of MCP tools that are specific to MongoDB clusters.