Fixes POD error and reflows

Author: JJ

doc/Language/subscripts.pod6

@@ -261,10 +261,9 @@ dimensions>) the subscript is preserved across the slice operation
 
 =head2 Truncating slices
 
-Referring to nonexistent elements in a slice subscript causes the
-output C<List> to contain undefined values (or L<whatever else|
-#Nonexistent elements> the collection in question chooses to return for
-nonexistent elements):
+Referring to nonexistent elements in a slice subscript causes the output C<List>
+to contain undefined values (or L<whatever else| #Nonexistent elements> the
+collection in question chooses to return for nonexistent elements):
 
     =begin code
     my  @letters = <a b c d e f>;
@@ -307,13 +306,13 @@ result.
 X<|Zen slices>
 =head2 Zen slices
 
-If you put the subscript operator behind an object without specifying any indices/keys at all, it simply
-returns the subscripted object itself. Since it is empty but returns
-everything, it is known as a I<Zen slice>.
+If you put the subscript operator behind an object without specifying any
+indices/keys at all, it simply returns the subscripted object itself. Since it
+is empty but returns everything, it is known as a I<Zen slice>.
 
-Zen slicing is different from passing a Whatever-star (which, like a normal slice,
-always returns a List of elements no matter the type of the original object)
-or an empty list (which returns an empty slice):
+Zen slicing is different from passing a Whatever-star (which, like a normal
+slice, always returns a List of elements no matter the type of the original
+object) or an empty list (which returns an empty slice):
 
     my %bag := (orange => 1, apple => 3).Bag;
     say %bag<>;    # OUTPUT: «Bag(apple(3), orange)␤»
@@ -339,7 +338,7 @@ elements and dimensions.
     say @twodim[0,1;1]; # 2nd element of both lists
     # OUTPUT: «(b 2)␤»
 
-X<|; (flattening)>
+X<|flattening ;>
 
 Multidimensional subscripts can be used to flatten nested lists when combined
 with L<Whatever>.