Dist::zilla::plugin::podspellingtests is the old name of dist::zilla::plugin::test::podspelling.

this package contains the wrapper plugin dist::zilla::plugin::podspellingtests which extends dist::zilla::test::podspelling and adds nothing.

you can safely remove this transitional package if none of your dist::zilla based distributions uses "[podspellingtests]" anymore.