Update platform/README.mdx

Co-authored-by: Herman Slatman <hslatman@users.noreply.github.com>

Author: tashian

platform/README.mdx

@@ -56,7 +56,8 @@ This process, known as cryptographic device attestation, forms the foundation fo
 
 # How can you use Smallstep?
 
-The Smallstep Agent is the vehicle through which Smallstep delivers cryptographically attested device identity to your organisation. It is the recommended way to identify devices and get client certificates to devices (Windows, Linux, Mac OS, ChromeOS) for Enterprise Wi-Fi, VPN, HTTP/3 proxies, or web applications. 
+The Smallstep Agent is the vehicle through which Smallstep delivers cryptographically attested device identity to your organisation. It is the recommended way to identify devices and get client certificates to devices (Windows, Linux, macOS, ChromeOS) for Enterprise Wi-Fi, VPN, HTTP/3 proxies, or web applications. 
+
 
 It is a lightweight program that runs in the background on devices and manages end-to-end certificate lifecycle for various resources. It works with all TPM 2.0 devices—virtual TPMs, firmware TPMs, or physical TPMs—and on some TEEs and Secure Enclaves (eg. Apple Managed Device Attestation).