[S02] change a heading

the described behavior really depends on the type, not on the container type
(that is, @A = 1, 2, 3 and $a = [1, 2, 3] stringify the same way)

S02-bits.pod

@@ -14,7 +14,7 @@ Synopsis 2: Bits and Pieces
     Created: 10 Aug 2004
 
     Last Modified: 09 Apr 2012
-    Version: 254
+    Version: 255
 
 This document summarizes Apocalypse 2, which covers small-scale
 lexical items and typological issues.  (These Synopses also contain
@@ -1969,9 +1969,9 @@ formerly known as scalar context, but we now reserve the "scalar"
 notion for talking about variables rather than contexts, much as
 arrays are disassociated from list context.)
 
-=head2 Container stringification
+=head2 List stringification
 
-In string contexts, container objects automatically stringify to
+In string contexts, lists and list-like objects automatically stringify to
 appropriate (white-space separated) string values.  In numeric
 contexts, the number of elements in the container is returned.
 In boolean contexts, a true value is returned if and only if there