Update “Check the value of your pension pot” content.

See https://docs.google.com/a/digital.cabinet-office.gov.uk/document/d/1Vv0zCL6ciPEgIU5J9T0Irz4WISSbdt3zM_lbsaQCP24/edit
Merge branch 'ggp-20141106-alpha' of github.com:guidance-guarantee-programme/prototypes into ggp-20141106-alpha