docs(hooks): CHANGE GATE message points at mglpi [#767]

CR filing one-liner now the Go connector (mopac-glpi-go) instead of the
deprecated bash shim. Functional gate re-verified after edit.

https://projects.knownelement.com/issues/767#note-4191

hooks/ticket-gate.sh

@@ -89,8 +89,8 @@ fi
 # remote operations additionally require a filed GLPI Change — its id in
 #   .crush/active-cr      (clear when the CR is closed: > .crush/active-cr)
 # Dev-lane targets are exempt (sectestbed/preprod/test/sandbox = Tier 0/1).
-# File a CR in one line (tooling lives in KNEL/inventory):
-#   echo "why/what/where" | scripts/glpi-change.sh create --agent --title "[#NNN] summary"
+# File a CR in one line (mglpi = KNEL connector mopac-glpi-go; agent identity):
+#   echo "why/what/where" | mglpi --config ~/.creds/mglpi-agent.env change create --title "[#NNN] summary" --content -
 if [ "$TOOL" = "bash" ]; then
   case "$CMD" in
     *"remote.sh vm-file"*|*"remote.sh prox-file"*|*"remote.sh vm-copy"*|*"remote.sh prox-copy"*|*"remote.sh vm"*|*"remote.sh prox"*|*"remote-dns.sh "*)
@@ -111,7 +111,7 @@ CHANGE GATE: prod-target remote operation requires a filed GLPI Change.
 
 File one, then set its id (Tier 2 of the t/325 escalation ladder):
 
-  echo "what/why/where" | scripts/glpi-change.sh create --agent --title "[#NNN] summary"
+  echo "what/why/where" | mglpi --config ~/.creds/mglpi-agent.env change create --title "[#NNN] summary" --content -
   echo '<change-id>' > .crush/active-cr
 
 Dev-lane targets (sectestbed/preprod/test/tsys5) are exempt.