emendation
ˌiːmɛnˈdeɪʃ(ə)n
noun
the process of making a revision or correction to a text.
correction,rectification,improvement,improving,enhancement,enhancing,polishing,refinement,refining,clarification,editing,alteration,rewriting,revision,copy-editing,subediting,amendment,modification,redrafting,recasting,rephrasing,rewording,reworking,expurgation,redaction,censorship,censoring,bowdlerization