It's wrong in the sense that it is inconsistent with what is found experimentally, according to Structure of the NO Dimer J. Am. Chem. Soc., 1982, 104 (17), pp 4715–4716.
The experimental structure is cis-ONNO, with ONN angle of 99.6 degrees.
The N-N bond length is 2.236 Angstroms, while the N-O bond lengths are 1.161 Angstroms.
No single Lewis structure can accurately describe the electronic state of this molecule; however, considering the bond lengths, a single N-N bond and triple N-O bonds would be better.
See The 16 valence electronic states of nitric oxide dimer form more information.