add a link to the upgrading docs in the error message #2256

Job	Run time
Build Linux packages (amd64, ubuntu:18.04, latest, amd64)	2m 1s
Build Linux packages (amd64, ubuntu:18.04, latest, amd64)	2m 1s
Build Linux packages (aarch64, ubuntu18.04, latest, arm64)	17m 12s
Build Linux packages (aarch64, ubuntu18.04, latest, arm64)	17m 12s
Build Linux packages (ppc64le, ubuntu18.04, latest, ppc64le)	16m 37s
Build Linux packages (ppc64le, ubuntu18.04, latest, ppc64le)	16m 37s
Build Linux packages (armv7, ubuntu18.04, latest, arm7)	18m 8s
Build Linux packages (armv7, ubuntu18.04, latest, arm7)	18m 8s
golangci-lint	2m 14s
golangci-lint	2m 14s
Test build flags	1m 17s
Test build flags	1m 17s
Test and deploy (1.23, ubuntu-latest)	7m 54s
Test and deploy (1.23, ubuntu-latest)	14m 38s
Test and deploy Windows	26m 38s
Test and deploy Windows	26m 38s
Test and deploy (1.23, macos-latest)	7m 39s
Test and deploy (1.23, macos-latest)	14m 45s
Test with PgSQL/MySQL/Cockroach	20m 21s
Test with PgSQL/MySQL/Cockroach	20m 21s
	4h 13m 52s

Provide feedback