[README] spec Windows 10 v1093+ for proper UTF8 support

README.md

@@ -117,7 +117,7 @@ may well be possible to use still older versions. Let me know of any successes!
 * (OPTIONAL) (testing) [Doctest](https://github.com/onqtam/doctest) 2.3.5+
 * (OPTIONAL) (documentation) [pandoc](https://pandoc.org/index.html) 1.19.2+
 * (OPTIONAL) (python bindings): Python 3.7+, [CFFI](https://pypi.org/project/cffi/) 1.13.2+, [pypandoc](https://pypi.org/project/pypandoc/) 1.5+
-* (runtime) Linux 5.3+, FreeBSD 11+, DragonFly BSD 5.9+, Windows Vista+, or macOS 11.4+
+* (runtime) Linux 5.3+, FreeBSD 11+, DragonFly BSD 5.9+, Windows 10 v1093+, or macOS 11.4+
 
 [Here's more information](INSTALL.md) on building and installation.