Document CVD ID format in CVE_Record_Format.json

Author: todb-cisa

schema/CVE_Record_Format.json

@@ -51,6 +51,7 @@
         },
         "cveId": {
             "type": "string",
+            "description":"The official CVE identifier contains the string 'CVE' , followed by the year, followed by a 4 to 19 digit number. Note that the year-part of the identifier should indicate either the year the vulnerability was discovered, or the year the CVE ID is published in. CVE IDs must be unique."
             "pattern": "^CVE-[0-9]{4}-[0-9]{4,19}$"
         },
         "cpe22and23": {