devtools: fix copyright-headers
devtools: fix copyright-headers

gridcoin/Gridcoin-Research,gridcoin/Gridcoin-Research,gridcoin/Gridcoin-Research,gridcoin/Gridcoin-Research,caraka/gridcoinresearch,caraka/gridcoinresearch,caraka/gridcoinresearch,gridcoin/Gridcoin-Research,gridcoin/Gridcoin-Research,caraka/gridcoinresearch,caraka/gridcoinresearch,caraka/gridcoinresearch