a11y: update credit link markup for screen-readers #5106
+27
−15
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single instance of non-compliance with WCAG 1.3.3 (#5105) for the OLH theme.
the audit for this SC identified that the icon had no text-equivalent. Then while fixing, I also found the external link wasn't marked up so added that fix which would otherwise have been found on a later audit when looking at navigation.
While fixing this, I also found that CrediT wasn't displaying on the OLH article page at all, due to a logic error. I have fixed that in the second commit here.