Publisher Correction: Rotating robots move collectively and self-organize.

The original version of this Article contained an error in Fig. 5. In Fig. 5e, the scale on the y-axis originally incorrectly went from '0' to '1.10-4'. The correct scale goes from '0' to '0.4'. In Fig 5f, the x-axis labels were incorrectly shifted to the right. This has been corrected in both the PDF and HTML versions of the Article.