Update linkedin

Author: PSDat123

_config.yml

@@ -42,7 +42,7 @@ social:
     - https://twitter.com/Dat2Phit # change to your twitter homepage
     # Uncomment below to add more social links
     - https://www.facebook.com/phungsieu.dat.1
-    # - https://www.linkedin.com/in/username
+    - https://www.linkedin.com/in/sieu-dat-p-b5a2901b2
 
 google_site_verification: # fill in to your verification string