edit: actually, how did that happen? The apostrophes show up correctly, they’re just all preceded by a  that doesn’t seem to represent anything?
C2 in ISO 8859-1 is ””. U+0092 is the control code Private Use 2 in Unicode, and 92 is the same in ISO 8859-1. However, the standard Western Windows code page 1252 extends ISO 8859-1 by assigning “’” (right single quotation mark) to 92.
HTML5/WHATWG requires an ISO 8859-1 charset declaration to be interpreted as Windows-1252 (https://blog.whatwg.org/the-road-to-html-5-character-encodin...), hence the displayed result is “Â’”.
The original Windows-1252 content must have previously been converted to UTF-8 under the assumption that the source is ISO 8859-1, i.e. mapping 92 to U+0092 (Private Use 2) instead of to U+2019 (Right Single Quotation Mark). The resulting UTF-8 encoding was placed in the web page, which however is declared as ISO 8859-1.
Edit: Although maybe that's not the most parsimonious explanation.
(It also says this happened to Boeing in 2018 and they ignored it, of course)
I'm actually serious, it seems to me they resist these kind of short-term helpers that would save lots of injuries.
Meanwhile the sharpie would take 1 minute.
But, fucking hell, apparently Boeing "engineers" are so dumb they never learned about Murphy's law.