fix: update invalid GitHub username for Alejandra Quetzalli (#1314)

Co-authored-by: V Thulisile Sibanda <66913810+thulieblack@users.noreply.github.com>

MAINTAINERS.yaml

@@ -319,11 +319,11 @@
     - cli
     - bundler
     - glee
-- name: Alejandra Quetzalli
-  github: alequetzalli
-  twitter: QuetzalliAle
+- name: Quetzalli Writes
+  github: quetzalliwrites
+  twitter: QuetzalliWrites
   slack: U02AKC14WAJ
-  linkedin: alejandra-quetzalli
+  linkedin: quetzalli-writes
   availableForHire: false
   company: Postman
   isTscMember: true