Fix typo in description for pg_replication_origin_advance function.

src/include/catalog/pg_proc.h

@@ -5321,7 +5321,7 @@ DATA(insert OID = 6011 ( pg_replication_origin_xact_reset PGNSP PGUID 12 1 0 0 0
 DESCR("reset the transaction's origin lsn and timestamp");
 
 DATA(insert OID = 6012 ( pg_replication_origin_advance PGNSP PGUID 12 1 0 0 0 f f f f t f v u 2 0 2278 "25 3220" _null_ _null_ _null_ _null_ _null_ pg_replication_origin_advance _null_ _null_ _null_ ));
-DESCR("advance replication itentifier to specific location");
+DESCR("advance replication identifier to specific location");
 
 DATA(insert OID = 6013 ( pg_replication_origin_progress PGNSP PGUID 12 1 0 0 0 f f f f t f v u 2 0 3220 "25 16" _null_ _null_ _null_ _null_ _null_ pg_replication_origin_progress _null_ _null_ _null_ ));
 DESCR("get an individual replication origin's replication progress");