Update release post steps

Author: eregon

Rakefile

@@ -335,9 +335,8 @@ namespace :release do
 
     desc '** print post release steps'
     task :post_steps do
-      # TODO: (petr 05-Jun-2021) automate and renew the process
-      puts 'Manually: create a release on GitHub with relevant changelog part'
-      puts 'Manually: send email same as release with relevant changelog part'
+      puts
+      puts 'Manually: create a release on GitHub, use the "Generate release notes" button'
       puts 'Manually: tweet'
     end
   end