schema: Format fix

Signed-off-by: zhouhao <zhouhao@cn.fujitsu.com>

Author: zhouhao

schema/config-windows.json

@@ -32,7 +32,7 @@
                             },
                             "shares": {
                                 "id": "https://opencontainers.org/schema/bundle/windows/resources/cpu/shares",
-                                "$ref": "defs-windows.json#/definitions/cpuShares"
+                                "$ref": "defs.json#/definitions/uint16"
                             },
                             "percent": {
                                 "id": "https://opencontainers.org/schema/bundle/windows/resources/cpu/percent",