changing 'known' to 'registered' as requested

Author: jacobcalvert

schemas/purl-type-definition.schema.json

@@ -163,7 +163,7 @@
             }
           ]
         },
-        "known_values": {
+        "registered_values": {
           "title": "Registered values",
           "description": "Optional set of known namespace values for this package type. If provided, the namespace value should be one of these.",
           "type": "array",

types/deb-definition.json

@@ -13,7 +13,7 @@
     "case_sensitive": false,
     "note": "The namespace is the \"vendor\" name such as \"debian\" or \"ubuntu\". It is not case sensitive and must be lowercased.",
     "requirement": "required",
-    "known_values": [
+    "registered_values": [
       "debian",
       "ubuntu"
     ]

types/rpm-definition.json

@@ -13,7 +13,7 @@
     "native_name": "vendor",
     "note": "The namespace is the vendor such as Fedora or OpenSUSE. It is not case sensitive and must be lowercased.",
     "requirement": "required",
-    "known_values": [
+    "registered_values": [
       "redhat",
       "centos",
       "fedora",