Unit Tests: Update @covers in a couple of tests

[sgrant]

I found a couple of mislabeled @covers tags when running phpunit with coverage-html. The attached patch fixes those two tags.
And this is my first ticket in trac, so it's totally scary. :)

[sgrant]

Update @covers tags

[boonebgorges]

And this is my first ticket in trac, so it's totally scary. :)

Welcome! And fear not :)

Good call on the incorrect annotation. For future reference, functions in the global scope must be referenced as sgrant notes. See ​https://phpunit.de/manual/3.7/en/appendixes.annotations.html#appendixes.annotations.covers

See also #26999.

[boonebgorges]

In 30976:

Use correct notation for global functions in @covers test annotations.

Props sgrant.
Fixes #30769.