@Ajwou
You did not mention what information you wanted to have in your Html from the Person column - Display Name, Email, Title, etc.
I will assume DisplayName in this case.
Please consider changing your Formula to the following:
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<td class='thirdWidth'>" & Concat(BrowseGallery1_1.Selected.SiteTeam, DisplayName & ", ") & "</td>
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This will give you a text of all of the DisplayNames in your column concatenated together with a comma-space.
If the ending comma-space is an annoyance then also consider the following:
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<td class='thirdWidth'>" & With({_n:Concat(BrowseGallery1_1.Selected.SiteTeam, DisplayName & ", ")}, Left(n, Len(n)-2)) & "</td>
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I hope this is helpful for you.