Avoids duplicate 'use' by rephrasing

Author: JJ

doc/Language/pragmas.pod6

@@ -6,7 +6,7 @@
 
 In Perl 6, B<pragmas> are directive used to either identify a
 specific version of Perl 6 to be used or to modify the compiler's
-normal behavior in some way. To enable a pragma, use C<use> keyword (similar
+normal behavior in some way. The C<use> keyword enables a pragma (similar
 to how you can C<use> a module). To disable a pragma, use the C<no> keyword:
 
 =begin code