by Noah A.
Whatever directory the moodle directory is in is the directory which your webserver serves its files from. Simply move the contents of the moodle directory to that directory. You can then delete the now-empty moodle directory. Assuming that your webserver directory is /var/www (a common setup if you're using Linux), your original directory structure was: var > www > moodle > (moodle files). What you want is: var > www > (moodle files).
Once you've got your files moved up a level as I just described, modify the "wwwroot" option in config.php to remove the "/moodle" from the end.
Hope that helps!