Update citext expected output to exactly match the real output, rather

than having some whitespace discrepancy.  Although whitespace is supposed
to be ignored in our regression tests, for some reason buildfarm member
spoonbill doesn't like it.

contrib/citext/expected/citext.out

@@ -216,7 +216,7 @@ SELECT citext_cmp('AARDVARK'::citext, 'AARDVARK'::citext) AS zero;
 SELECT citext_cmp('B'::citext, 'a'::citext) > 0 AS true;
  true 
 ------
-    t
+ t
 (1 row)
 
 -- Do some tests using a table and index.

contrib/citext/expected/citext_1.out

@@ -216,7 +216,7 @@ SELECT citext_cmp('AARDVARK'::citext, 'AARDVARK'::citext) AS zero;
 SELECT citext_cmp('B'::citext, 'a'::citext) > 0 AS true;
  true 
 ------
-    t
+ t
 (1 row)
 
 -- Do some tests using a table and index.