Merge pull request 'Update comment of `ubuntu.rake`.' (#9) from update-ubuntu-rake into main

Reviewed-on: #9

tasks/ubuntu.rake

@@ -1,6 +1,6 @@
 #!/usr/bin/env rake
 
-desc 'Invoke itamae command for the first time'
+desc 'Invoke itamae command for AWS Environment for the first time'
 task :ubuntu do
   node = `ls -1 nodes/*.json | xargs -I % basename % .json | fzf`
   node.chomp!