Updating meta footer for consistency

[brianelton]

@shawna-slh this the result of #697

Instead of "Contributors in Acknowledgements" I updated to "Contributors: see Acknowledgements" to match how it is set up in the meta footer.

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[shawna-slh]

Hey @brianelton We need EOWG in the footers. See https://github.com/w3c/wai-website/issues/610

[brianelton]

ah, right. I didn't see that change. Will fix it ASAP.

[brianelton]

@shawna-slh new PR (#708) for fixing EOWG reference. Do you want to have a look before I merge it with master-2.0?