Update README.md

Author: eregon

README.md

@@ -3,6 +3,4 @@
 These builds are primarily meant to be used inside GitHub Actions with
 [ruby/setup-ruby](https://github.com/ruby/setup-ruby).
 
-They can also be used as nightly builds of TruffleRuby.
-
-They might not work in any other environment.
+They can also be used as nightly builds of TruffleRuby, see [the documentation](https://github.com/oracle/truffleruby/blob/master/doc/user/standalone-distribution.md#latest-nightly-build).