Fix editing error in NEWS and improve clarity

Author: stefanor

Doc/whatsnew/3.16.rst

@@ -75,11 +75,11 @@ New features
 Other language changes
 ======================
 
-* Stable ABI extensions may now include a multiarch tuple in the
+* Stable ABI extensions now include a multiarch tuple in the
   filename, e.g. ``foo.abi3-x86-64-linux-gnu.so``.
   This permits stable ABI extensions for multiple architectures to be
   co-installed into the same directory, without clashing with each
-  other, as regular dynamic extensions do. Build may tools will generate
+  other, as regular dynamic extensions do. Build tools will generate
   these multiarch tagged filenames, by default, when targeting
   compatibility with at least Python 3.15.
   (Contributed by Stefano Rivera in :gh:`122931`.)