Add note in doc about Jekyll import

docs/content/tutorials/migrate-from-jekyll.md

@@ -11,6 +11,7 @@ title: Migrate to Hugo from Jekyll
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+**Note:** Hugo 0.15 comes with a `hugo import jekyll` command, see [import from Jekyll](/commands/hugo_import_jekyll/).
 ## Move static content to `static`
 Jekyll has a rule that any directory not starting with `_` will be copied as-is to the `_site` output. Hugo keeps all static content under `static`. You should therefore move it all there.
 With Jekyll, something that looked like