Update expected file from quoting change

I neglected to update this in 59a2111b. Per buildfarm

Update expected file from quoting change
I neglected to update this in 59a2111b. Per buildfarm
4b746f0d · Alvaro Herrera · cad3edef · 4b746f0d
Commit 4b746f0d authored Mar 28, 2016 by Alvaro Herrera
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src/test/regress/expected/event_trigger.out src/test/regress/expected/event_trigger.out +1 -1

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--- a/src/test/regress/expected/event_trigger.out
+++ b/src/test/regress/expected/event_trigger.out
@@ -2,7 +2,7 @@
 create event trigger regress_event_trigger
   on ddl_command_start
   execute procedure pg_backend_pid();
-ERROR:  function "pg_backend_pid" must return type "event_trigger"
+ERROR:  function pg_backend_pid must return type "event_trigger"
 -- OK
 create function test_event_trigger() returns event_trigger as $$
 BEGIN