chore: move whatsnew from 3.15 into 3.16 file

Author: AbduazizZiyodov

Doc/whatsnew/3.15.rst

@@ -1144,15 +1144,6 @@ difflib
   (Contributed by Jiahao Li in :gh:`134580`.)
 
 
-dis
----
-
-* :func:`dis.dis` supports colored output by default, which can also be
-  :ref:`controlled <using-on-controlling-color>` through ``NO_COLOR=1``
-  environment variable.
-  (Contributed by Abduaziz Ziyodov in :gh:`144207`.)
-
-
 email
 -----
 

Doc/whatsnew/3.16.rst

@@ -281,6 +281,15 @@ ctypes
   (Contributed by Peter Bierma in :gh:`153903`.)
 
 
+dis
+---
+
+* :func:`dis.dis` supports colored output by default, which can also be
+  :ref:`controlled <using-on-controlling-color>` through ``NO_COLOR=1``
+  environment variable.
+  (Contributed by Abduaziz Ziyodov in :gh:`144207`.)
+
+
 concurrent.futures
 ------------------