Update README.md

Author: learning-zone

README.md

@@ -1611,7 +1611,7 @@ Middleware functions that return a Promise will call `next(value)` when they rej
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 </div>
 
-## Q. Explain the use of next in node.js with example?
+## Q. Explain the use of next in Node.js?
 
 The next function is a function in the Express router which, when invoked, executes the middleware succeeding the current middleware.