Correction: Persistent ferromagnetic ground state in pristine and Ni-doped Fe3GaTe2 flakes - Ki-Hoon Son; Sehoon Oh; Junho Lee; Sobin Yun; Yunseo Shin; Shaohua Yan; Chaun Jang; Hong-Sub Lee; Hechang Lei; Se Young Park; Hyejin Ryu (Nano Convergence)