Update voters_data_permission.rst

remove ContainerInterface
minor #3822 Update voters_data_permission.rst (mimol91)

This PR was submitted for the 2.4 branch but it was merged into the 2.3 branch instead (closes #3822).

Discussion
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Update voters_data_permission.rst

remove ContainerInterface

Commits
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9710ce1 Update voters_data_permission.rst