fix typo

Author: coke

doc/Language/rb-nutshell.pod6

@@ -487,7 +487,7 @@ Perl 6 uses C<.Str>, or C<.gist> for the same affect.
 =head3 C<if> C<elsif> C<else> C<unless>
 
 This work very similarly between Ruby and Perl 6, but Perl 6 uses C<{ }> to
-clearly deliniate the blocks.
+clearly delineate the blocks.
 
     # Ruby
     if x > 5