Fix name of macOS platform and link to README file
diff --git a/docs/README.md b/docs/README.md
index 2dd8f1d..efbe3ad 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -14,7 +14,7 @@ hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.
-SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
+SDL officially supports Windows, macOS, Linux, iOS, and Android.
Support for other platforms may be found in the source code.
SDL is written in C, works natively with C++, and there are bindings
@@ -38,7 +38,7 @@ More documentation and FAQs are available online at [the wiki](http://wiki.libsd
- [Git](README-git.md)
- [iOS](README-ios.md)
- [Linux](README-linux.md)
-- [OS X](README-macosx.md)
+- [macOS](README-macos.md)
- [OS/2](README-os2.md)
- [Native Client](README-nacl.md)
- [Pandora](README-pandora.md)