Slight tweak to macOS instructions

[Jeff Evans]

Hello,

In regards to this page: https://www.sql-workbench.eu/macos-binary.html

I have found that as written, the automator action shows an error message when exiting like:

The action "Run Shell Script" encountered an error: ""

There is a simple way to make that error stop happening, which is to add the following line to the end of the script block:

$r

I think the problem is we stored the result of the java command to a variable named r, but did not actually return that from the overall script.

[Thomas Kellerer]

Thanks. I have updated the page.