style: fix yaml newline

Author: GulshanJha00

src/users/GulshanJha00.yaml

@@ -7,10 +7,6 @@ country: India
 location: Bangalore
 role: MERN Stack Developer
 languages: JavaScript TypeScript C++ Python
-bio: |
-  MERN stack developer focused on Next.js, backend systems, and open source.
-
+bio: MERN stack developer focused on Next.js, backend systems, and open source.
   Currently learning DevOps and improving problem solving skills through DSA and real-world projects.
-
   Interested in scalable web applications, UI/UX, and developer tooling.
-