Update minimum-password-length.md

[saif71]

Issue: #10390

Two changes: • In the Best Practice section:

1. Changed the capitalization from "Set Minimum..." => "Set minimum..."
2. In the first line it says "Set minimum password length to at least a value of 14", but on the next line it says "In most environments, an eight-character password is recommended because it's long enough..."; a little bit contradictory with each other. So I changed the minimum password length to 8. Also, as of Aug 2022, this is suggested in the guidelines of NIST SP 800-62 Paragraph 5.1.1.2.

Ref: https://nvlpubs.nist.gov/nistpubs/specialpublications/nist.sp.800-63b.pdf (Page: 23, Section: 5.1.1.2)

[aczechowski]

Thanks @saif71 for the edit. I'm checking with the content owner, as it looks like there's been some previous discussions around this setting. For example, see #6947 (which references several others).

[paolomatarazzo]

Thank you for your contribution, @saif71. I approved the proposed change.