logo error fixed.

Author: Condition00

docs/Nextjs/intro-nextjs.md

@@ -94,13 +94,9 @@ Imagine you're building an online store. Different pages have different requirem
 
 Next.js empowers you to **mix and match** these strategies within the same application, choosing the optimal approach for each page. This flexibility is what makes Next.js stand out from other frameworks.
 
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+<div align="center">
+  <img src="./assets/nextjs-logo.png" alt="Next.js Framework" width="600" />
+</div>
 
 ## Understanding React and React Frameworks