noosfero | html_safe: fix action tracker description mess (#647)

[Bráulio Bhavamitra]

New comment for Merge Request 647

https://gitlab.com/noosfero/noosfero/merge_requests/647#note_1839176


Bráulio Bhavamitra

oops, missed that. gonna put it right now, although they don't look like necessary (all tests pass, it seems it is only called for `ActionTracker::Record`)

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