Update About WAI, Contacting, Translating and Using WAI Material

[remibetin]

This PR includes changes to some pages in the "About" section from #1107

@netlify /about/

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[remibetin]

@tamsinewing555 I would like to wait for a discussion about URL strategy before updating URLs.

If you want to see the content updates published now, I can do so while keeping the existing URLs for now.

[tamsinewing555]

@tamsinewing555 I would like to wait for a discussion about URL strategy before updating URLs.

If you want to see the content updates published now, I can do so while keeping the existing URLs for now.

@remibetin - that would be great to get this visibility, if that's okay and doesn't create more work for you.

[tamsinewing555]

@remibetin - let me know if there's something I can do to progress this.

[remibetin]

@tamsinewing555 This is ok with me. I have fixed the conflicts and assigned to @shawna-slh for approval.

[shawna-slh]

I did not review the copyedits. Please let me know if there is something specific that you would like mt to look at.

[shawna-slh]

@tamsinewing555 This doesn't read right.
was: Learn more about participating in WAI.
now: Learn more about participate in WAI.