You mean the degeneracy in the last base of codons that I mention? I wouldn't even call that an error correcting: would you count a file type that just skipped

You mean the degeneracy in the last base of codons that I mention? I wouldn't even call that an error correcting: would you count a file type that just skipped every third byte 'error correction'? I wouldn't. This isn't a robust system and most changes to any bases will change the protein sequence. Contrast that to DNA which does have error correction, since there are two strands instead of one and also two chromosomes with nearly identical information. Both are used to repair errors, at least some of the time. I'm not aware of such a system for RNA and it's not clear where it would get the information from - though maybe the most likely system would be a 'self-destruct' where errors are detected but since repair is impossible, the RNA is just destroyed.