Previous maturity is WD not FPWD.

Author: gkellogg

index.html

@@ -26,7 +26,7 @@
       // and its maturity status
       prevVersion:            "https://www.w3.org/TR/2018/WD-json-ld11-20181011/",
       previousPublishDate:    "2018-10-11",
-      previousMaturity:       "FPWD",
+      previousMaturity:       "WD",
       github:                 "https://github.com/w3c/json-ld-syntax/",
 
       // if there a publicly available Editor's Draft, this is the link