fix(certifications): update correct answer for question on Meshery Server

Signed-off-by: lekaf974 <[email protected]>

Author: lekaf974

content/certifications/c5ada327-8a58-4c8a-b9fa-51b95696488c/certified-meshery-contributor/meshery-server.md

@@ -581,7 +581,7 @@ questions:
     marks: 2
     options:
       - id: "a"
-        text: "Meshery"
+        text: "Layer5"
         is_correct: true
       - id: "b"
         text: "LDAP"