Update CoderDojo stats based on Raspberry Pi site:
Update CoderDojo stats based on Raspberry Pi site:

cf. CoderDojo - Raspberry Pi
https://www.raspberrypi.org/education/coderdojo/

coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp,coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp,coderdojo-japan/coderdojo.jp,coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp