Fix typo in test file name added in commit 4909b38.

Author: Shlok Kyal <shlok.kyal.oss@gmail.com>
Backpatch-through: 13
Discussion: https://postgr.es/m/CANhcyEXsObdjkjxEnq10aJumDpa5J6aiPzgTh_w4KCWRYHLw6Q@mail.gmail.com

Author: Amit Kapila

contrib/test_decoding/Makefile

@@ -9,7 +9,7 @@ REGRESS = ddl xact rewrite toast permissions decoding_in_xact \
 ISOLATION = mxact delayed_startup ondisk_startup concurrent_ddl_dml \
 	oldest_xmin snapshot_transfer subxact_without_top concurrent_stream \
 	twophase_snapshot slot_creation_error catalog_change_snapshot \
-	skip_snapshot_restore invalidation_distrubution
+	skip_snapshot_restore invalidation_distribution
 
 REGRESS_OPTS = --temp-config $(top_srcdir)/contrib/test_decoding/logical.conf
 ISOLATION_OPTS = --temp-config $(top_srcdir)/contrib/test_decoding/logical.conf

contrib/test_decoding/expected/invalidation_distrubution.out renamed to contrib/test_decoding/expected/invalidation_distribution.out

@@ -63,7 +63,7 @@ tests += {
       'twophase_snapshot',
       'slot_creation_error',
       'skip_snapshot_restore',
-      'invalidation_distrubution',
+      'invalidation_distribution',
     ],
     'regress_args': [
       '--temp-config', files('logical.conf'),