Update "Affiliated package review editor" role description as per APE 22

[pllim]

@dhomeier wants to update the description of https://www.astropy.org/team.html#Affiliated_package_review_editor to match https://github.com/astropy/astropy-APEs/blob/main/APE22.rst .

This is a follow up of:

• Affiliated Package: Consolidate with pyOpenSci? astropy-project#334
• APE 24: Astropy Affiliated Packages with pyOpenSci (now APE 22) astropy-APEs#87

cc @WilliamJamieson @hamogu

[pllim]

Was done in #574