Update haproxy.sh

resolved issue with HAProxy https://github.com/acmesh-official/acme.sh/issues/4788
according https://serversforhackers.com/c/letsencrypt-with-haproxy

deploy/haproxy.sh

@@ -147,7 +147,7 @@ haproxy_deploy() {
   # Create a temporary PEM file
   _temppem="$(_mktemp)"
   _debug _temppem "${_temppem}"
-  cat "${_ckey}" "${_ccert}" "${_cca}" >"${_temppem}"
+  cat "${_ccert}" "${_cca}" "${_ckey}" >"${_temppem}"
   _ret="$?"
 
   # Check that we could create the temporary file