Adding openssl install line for M1 Macs

[Oechiih]

PR Summary

Installing openssl from MacPorts as previously described doesn't work on Apple Silicon Macs. As described here
I ran into this when I wanted to work with DSC.

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[opbld33]

Docs Build status updates of commit cd979b0:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/Installing-PowerShell-on-macOS.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

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[sdwheeler]

Reading the blog post you linked to, it is talking about how to install prerequisites to support libmi on an Mac M1. I don't think that is officially supported by us. I will research this.

[TravisEz13]

Suggested change

	1. Install OpenSSL by running `sudo port install openssl10`.
	1. When running a Mac with an Intel processor, Install OpenSSL by running `sudo port install openssl10`.

[opbld32]

Docs Build status updates of commit 27f3a0e:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/Installing-PowerShell-on-macOS.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel

[ghost]

All CLA requirements met.

[opbld32]

Docs Build status updates of commit 514c388:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/Installing-PowerShell-on-macOS.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel