Correct a link for Thetford Parish Registers

Corrections
The Link *	BAPTISMS 1650-1900 MARRIAGES 1650-1900 BURIALS 1650-1900 + FamilySearch  BAPTISMS 1837-2008 MARRIAGES 1837-2005 BURIALS 1837-2007 + FamilySearch Index  INTERNATIONAL GENEALOGICAL INDEX + FamilySearch  MONUMENTAL INSCRIPTIONS + Gravestone Photographic Resource  MONUMENTAL INSCRIPTIONS + Find A Grave  MONUMENTAL INSCRIPTIONS limited + Find A Grave  1841 Census 1851 Census 1861 Census 1871 Census 1881 Census 1891 Census 1901 Census 1911 Census + FamilySearch  WILLS 1800-1857 + Norfolk Sources
Changes *