(doc) - Ban Distribution Management web page improvements

[WilliamCollishaw]

Adds a space between the words Distribution and Management in the web page path for consistency with other enforcer built in rules pages.

Removes ignoreParent from the documented list of supported parameters which was removed in MENFORCER-293, commit 8d6f3e899f2eaaa11960876f2d4329dae03d6c3f

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