I noticed that, if you search a Phriction document, the results do not mention "Phriction" nor "wiki" so it can be confusing.
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Instead, see that Maniphest mentions itself. So, it's more clear:
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Test for Diffusion. See that it just mentions "Repository" (it is very clear and simple):
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== Proposed solution ==
Somehow improve the Phriction search results to also mention "Wiki page" or something like that in the footer. Just like a Diffusion repository just says "Repository".
Example mockup:
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In this way you see that it is a "Wiki page".