Changes:
* Add missing keyword: `byte-order-mark` (there is only "byte-order-marker" and "bom"). Obtained from: https://docs.kde.org/stable5/en/applications/katepart/config-variables.html
* Remove keywords delimiters "*" and "+", because in the "RemoveSpacesOptions" list, the keywords "*" and "+" are not highlighted.
* Fix ";" in the "RemoveSpaces" context ("remove-trailing-spaces" variable). The character ";" it is not highlighted as in the rest of the variables, since when writing a value, the context ends.
{F6128802}
* For a strange reason, the use of `<IncludeRules context="##Modelines"/>`, in others files, causes the line continuation character ("\") to be highlighted as `dsNormal`. This is solved by removing the LineContinue rule in the "Normal" context in Modelines. I consider the LineContinue & DetectSpaces rules to be unnecessary in the "Normal" context, so I've eliminated them.
{F6128805}
I was going to add a test file, but there are errors when generating the html and ref files, even with the unmodified modelines.xml file :S