Fix documentation markup in DCTar.h

[kvaDrug]

There were 2 little problems with markup which caused warnings in Xcode 11.3.

1. Colon ':' after @param caused "Parameter ':' not found in the function declaration" warnings.
2. Parameter name mismatch caused warnings like "Parameter 'toPath' not found in the function declaration". This fix insures that docs work as expected.

[kvaDrug]

You also need to merge this branch into master. I can't do it because I don't have write access.