perldelta: move cygwin change note out of "New Platforms"

I suspect the delay and common structure of the sections
resulted in a bad merge of this note to the wrong section.

Author: tonycoz

pod/perldelta.pod

@@ -309,11 +309,9 @@ source tree.
 
 =over 4
 
-=item Cygwin
+=item XXX-some-platform
 
-Supply an explicit base address for C<cygperl*.dll> that cannot
-conflict with those generated by C<--enable-auto-image-base>.  [GH
-#22695][GH #22104]
+XXX
 
 =back
 
@@ -338,9 +336,11 @@ L</Modules and Pragmata> section.
 
 =over 4
 
-=item XXX-some-platform
+=item Cygwin
 
-XXX
+Supply an explicit base address for C<cygperl*.dll> that cannot
+conflict with those generated by C<--enable-auto-image-base>.  [GH
+#22695][GH #22104]
 
 =back