Better wording

'They' didn't refer to anything in particular.

Author: rafaelschipiura

doc/Type/Int.pod6

@@ -215,7 +215,7 @@ number, or L<NaN|/type/Num#NaN> if it does not represent a number.
     
 =head2 method Range
 
-Returns a L<Range object|/type/Range> that represents the range of values they support.
+Returns a L<Range object|/type/Range> that represents the range of values supported.
 
 =head1 Operators