website/powerpc: update supported hardware, news and recommendations

[alfredo]

Summary

Update supported hardware, news and recommendations

[jhibbits]

Thanks for updating this!

[pauamma_gundo.com]

website/content/en/platforms/ppc.adoc

63

Or perhaps, since portsnap is being deprecated and ports doc (https://docs.freebsd.org/en/books/handbook/ports/#ports-using) was changed to recommend git for -current (back when -current was 13), remove that altogether and just point to the handbook.

70

Spelling

133

Number agreement, spelling, missing articles (adjust if there's more than the one workaround listed).

142

[alfredo]

@pauamma_gundo.com fixes

[alfredo]

Patch updated with @pauamma_gundo.com comments. Thanks!

[carlavilla]

Thanks, I'm gonna make the commit :)