bug fix error syntax in schema definitions

Signed-off-by: xiekeyang <[email protected]>

Author: xiekeyang

schema/content-descriptor.json

@@ -6,14 +6,15 @@
   "properties": {
     "mediaType": {
       "description": "the mediatype of the referenced object",
-      "$ref": "defs-image.json#definitions/mediaType"
+      "$ref": "defs-image.json#/definitions/mediaType"
     },
     "size": {
       "description": "the size in bytes of the referenced object",
       "$ref": "defs.json#/definitions/int64"
     },
     "digest": {
-      "$ref": "defs-image.json#definitions/digest"
+      "description": "the cryptographic checksum digest of the object, in the pattern '<hash>:<hexadecimal digest>'",
+      "$ref": "defs-image.json#/definitions/digest"
     },
     "urls": {
       "description": "a list of urls from which this object may be downloaded",

schema/defs-image.json

@@ -23,14 +23,15 @@
       "properties": {
         "mediaType": {
           "description": "the mediatype of the referenced object",
-          "$ref": "#definitions/mediaType"
+          "$ref": "#/definitions/mediaType"
         },
         "size": {
           "description": "the size in bytes of the referenced object",
           "$ref": "defs.json#/definitions/int64"
         },
         "digest": {
-          "$ref": "#definitions/digest"
+          "description": "the cryptographic checksum digest of the object, in the pattern '<hash>:<hexadecimal digest>'",
+          "$ref": "#/definitions/digest"
         },
         "urls": {
           "description": "a list of urls from which this object may be downloaded",