Fix #1185 bug (#1197)

This semicolon breaks the query

Signed-off-by: Joe Adams <github@joeadams.io>

Author: sysadmind

collector/pg_process_idle.go

@@ -56,7 +56,7 @@ func (PGProcessIdleCollector) Update(ctx context.Context, instance *instance, ch
 				COUNT(*) AS process_idle_seconds_count
 				FROM pg_stat_activity
 				WHERE state ~ '^idle'
-				AND pid <> pg_backend_pid();
+				AND pid <> pg_backend_pid()
 				GROUP BY state, application_name
 			),
 			buckets AS (