Touran Rear wheel alignment

I have a 54 Touran 2.0. After its MOT it was noted that both rear tyres are wearing on the insides. This wasn't noticed the year before when the tracking was checked when the front tyres were changed.
The only thing I have had done since is replace the rear springs (6 months apart) after the coil springs snapped. I only removed one nut and bolt to do this.

Has this changed the alignment somehow? If it has, what do I adjust to bring it back.

Many Thanks in advance.

Steve.