Updated t() to translation() in wikis.html.erb

[bryceparkman]

Fixes #6738 (<=== Add issue number here)

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[SidharthBansal]

Superb!
Please provide a screenshot!
Thanks

[grvsachdeva]

Hey @bryceparkman, can you please provide a screenshot of the page so that it can be reviewed? Thanks!

[grvsachdeva]

NOTE: As it has already been 3 weeks, so this PR will be closed in a week unless the screenshot is attached.

[SidharthBansal]

@nstjean can you please provide the screenshots
THanks

[nstjean]

Here is a screenshot!

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[SidharthBansal]

Thanks all