doc: update skpkg migration news

Signed-off-by: Dasun Abeykoon <Dasun20202020@hotmail.com>

Author: dabeycorn

news/doc.rst news/skpkg.rstnews/doc.rst renamed to news/skpkg.rst

@@ -6,6 +6,7 @@
 
 * Updated from Python 2.6-2.7 to Python 3.11-3.13
 * Support ``scikit-package`` Level 5 standard (https://scikit-package.github.io/scikit-package/).
+* Rewrite README.rst instructions
 
 **Deprecated:**