Retraction notice to 'Corrigendum to “An unsupervised learning schema for seeking patterns in rms voltage variations at the sub-10-minute time scale” [Sustain. Energy Grids Netw. 31 (2022) 1–12/ 100773] [Sustain. Energy Grids Netw. 32 (2022) 100918]' - Retraction Notice | RetractBase