docs: macos - change "versiona" to "versions" (GH-18467)
diff --git a/Mac/README.rst b/Mac/README.rst
index 4f2e2ce..ec7d873 100644
--- a/Mac/README.rst
+++ b/Mac/README.rst
@@ -49,7 +49,7 @@
system header files in their traditional locations, like ``/usr/include`` and
``/System/Library/Frameworks``; instead they are found within a MacOSX SDK.
The Apple-supplied build tools handle this transparently and current
- versiona of Python now handle this as well. So it is no longer necessary,
+ versions of Python now handle this as well. So it is no longer necessary,
and since macOS 10.14, no longer possible to force the installation of system
headers with ``xcode-select``.