fixed typo

posts/mongoDB-vs-postgreSQL.mdx

@@ -16,7 +16,7 @@ As a backend developer, you’ve probably faced that moment in a project when yo
 You’ve got your architecture mapped out, your APIs planned, and your team is ready to ship  but then comes the question of data storage.
 Do you go with something flexible and schema-less, or do you opt for the tried-and-true relational model?
 It’s a decision that can make or break the scalability, performance, and even the success of your application.
-MongoDB and PostgreSQ are two heavyweights in the open-source database world.
+MongoDB and PostgreSQL are two heavyweights in the open-source database world.
 - MongoDB offers the freedom of a NoSQL document-based structure, perfect for rapidly evolving applications.
 - PostgreSQL, on the other hand, gives you the rock-solid reliability of a relational database with advanced querying capabilities.
 Both have their unique strengths, and as a backend developer, knowing which one to pick for your project is crucial.