SUMMARY
The three-dot ellipsis '…' in menu commands and lists in the Skrooge documentation now appears as its numeric HTML entity in the PDF Skrooge handbook, e.g. the File Menu help in Basic Usage" displays "Change password…"

STEPS TO REPRODUCE
1. Open the Skrooge Handbook PDF version, https://docs.kde.org/trunk5/en/skrooge/skrooge/skrooge.pdf#subsection.3.1.1
2. Search for 8230, or navigate to Using Skrooge > The main menu > The file menu

OBSERVED RESULT
… appears where the three-dot ellipsis should be:
> Change password…: To change the password

EXPECTED RESULT
See the ellipsis character (or three plain ASCII dots in a row).

SOFTWARE/OS VERSIONS
n/a

ADDITIONAL INFORMATION
This is probably a result of commit 8880fae287 which "fix ellipsis character" to address bug 481226 by changing sequences of three dots to the UTF-8 ellipsis code point. The HTML version of the handbook, https://docs.kde.org/trunk5/en/skrooge/skrooge/using-skrooge-beginner.html#menu-file , shows the ellipsis code point fine
> Change password…: To change the password. Leave the field empty to remove the password

I'm not sure what's happening. I think ellipsis turning into  … is the only HTML entity in the PDF. Other UTF-8 characters like "-500€ per month" and "Stéphane" in index.docbook work fine. It's probably something going wrong in the KF5DocTools machinery.