Update Misc/NEWS.d/next/Build/2025-09-04-12-16-31.gh-issue-138497.Y_5YXh.rst

Rewording news entry

Co-authored-by: Savannah Bailey <[email protected]>

Author: danigm

Misc/NEWS.d/next/Build/2025-09-04-12-16-31.gh-issue-138497.Y_5YXh.rst

@@ -1,4 +1,4 @@
-LLVM version can be modified during build with environment variable
-"LLVM_VERSION". Use this at your own risk, as there is only one
-officially supported LLVM version. For more information, please check
-Tools/jit/README.md.
+The LLVM version used by the JIT at build time can now be modified using
+the ``LLVM_VERSION`` environment variable. Use this at your own risk, as
+there is only one officially supported LLVM version. For more information,
+please check ``Tools/jit/README.md``.