I need to rewrite "correct a mistake" into something more professional. I can think of "amending a mistake" or rectifying it, but none seems to sound well (I want to put emphasis on a word that's accepted in English literature). THe idea is to say: Correct a mistake made in the system (say because of spelling error).
One typically corrects mistakes in publications by issuing errata (s. erratum). From Lexico:
erratum: An error in printing or writing.
Example sentence: ‘The publisher has inserted an erratum slip noting three errors in dates and explaining that a contrite Hoban ‘writes at all hours of the day and night, sometimes when a little the worse for wear’.’
errata: A list of corrected errors appended to a book or published in a subsequent issue of a journal.
Example sentence: 'Periodicals would use errata sections to correct some of the errors, and letters to the editor could be used to debate a previous article's contentions and possibly set the record straight.’
A less common term is corrigendum (pl. corrigenda). From Lexico:
corrigendum: A thing to be corrected, typically an error in a printed book.
Example sentence: ‘the 1980-84 cumulation contains corrigenda which are not included in the annual volumes’
If you're interested in a less formal context, you could use the simple word correction.
Example sentence: 'Correction: Please replace dictionray with dictionary.'