Update docs and bundled schema.

Author: chandanbn

schema/v5.0/docs/CVE_JSON_5.0_bundled.json

@@ -102,7 +102,7 @@
     "timestamp": {
       "type": "string",
       "format": "date-time",
-      "description": "Date/time format based on RFC3339 and ISO ISO8601, with an optional timezone in the format 'yyyy-MM-ddTHH:mm:ssZZZZ'. If timezone offset is not given, GMT (0000) is assumed.",
+      "description": "Date/time format based on RFC3339 and ISO ISO8601, with an optional timezone in the format 'yyyy-MM-ddTHH:mm:ss[+-]ZH:ZM'. If timezone offset is not given, GMT (+00:00) is assumed.",
       "pattern": "^(((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)|(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))|(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))|(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30)))T(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])(\\.[0-9]+)?(Z|[+-][0-9]{2}:[0-9]{2})?$"
     },
     "version": {
@@ -1784,7 +1784,7 @@
         ],
         "properties": {
           "time": {
-            "description": "Timestamp representing when the event in the timeline occurred. The timestamp format is based on RFC3339 and ISO ISO8601, with an optional timezone. yyyy-MM-ddTHH:mm:ssZZZZ - if the timezone offset is not given, GMT (0000) is assumed.",
+            "description": "Timestamp representing when the event in the timeline occurred. The timestamp format is based on RFC3339 and ISO ISO8601, with an optional timezone. yyyy-MM-ddTHH:mm:ss[+-]ZH:ZM - if the timezone offset is not given, GMT (+00:00) is assumed.",
             "$ref": "#/definitions/timestamp"
           },
           "lang": {