give hints how to fix issues Signed-off-by: Sami Kerola <kerolasa@cloudflare.com>
spring maintenance to the documentation This includes checking spelling and updating links to newer spec draft. Signed-off-by: Sami Kerola <kerolasa@cloudflare.com>
DCTL1025: tell why underscores in dns are considered problematic Signed-off-by: Sami Kerola <kerolasa@cloudflare.com>