In an earlier post I wrote that the records you found are military records kept by the regiment in which Johann Rudolf served, so I asked if you were looking for church records.
Johann Rudolf and Theresia Hedwige certainly got married in Świdnica (Schweidnitz), which is confirmed by a note on this subject in the Silesian newspaper Schlesische Provinzialblätter, 1792, 15. Bd., 6th St .: Juny; link below, information about the wedding can be found on page 558. https://www.sbc.org.pl/dlibra/publication/3511/edition/3261/content
You know the date and place of the wedding, so nothing prevents you from checking whether, being Catholics, they got married in the cathedral church of St. Stanislaus and St. Wenceslaus in Świdnica, and the information about their wedding was also entered into the record books kept by the regiment. Alternatively, it will turn out that they got married in the garrison church and the only trace of it is the certificate of their wedding you know.