Accomodate 0.72 release

[matthargett]

Change a few reference to 0.71 to 0.72 to reflect latest release.

⚠️ Make sure you are targeting microsoft/react-native-macos for your PR ⚠️

(then delete these lines)

Please select one of the following

• I am removing an existing difference between facebook/react-native and microsoft/react-native-macos 👍
• I am cherry-picking a change from Facebook's react-native into microsoft/react-native-macos 👍
• I am making a fix / change for the macOS implementation of react-native
• I am making a change required for Microsoft usage of react-native
• I am making a documentation fix/change for the macOS react-native

Summary

As we use the macOS fork as the basis for our visionOS fork, I noticed that some explicit references to 0.71 are now out-of-date given the 0.72 release last week.

Changelog

[INTERNAL] [FIXED] - Update internal port documentation references to 0.72

Test Plan

Markdown lint is clear.

[Saadnajmi]

Re: visionOS Fork: Can we talk about that? We were thinking of doing something similar :P