schema/testdata: fix spec-example.json.

Fix incorrect sample Spec (hooks as map as opposed to a slice).
The JSON Schema validator code misses this and a bunch of other
problems since it does not do a DisallowUnknownFields() on its
JSON decoder instances.

Signed-off-by: Krisztian Litkey <[email protected]>

Author: klihub

schema/testdata/good/spec-example.json

@@ -25,8 +25,8 @@
       {"hostPath": "/usr/lib/libVendor.so.0", "containerPath": "/usr/lib/libVendor.so.0"}
     ],
     "hooks": [
-      {"createContainer": {"path": "/bin/vendor-hook"} },
-      {"startContainer": {"path": "/usr/bin/ldconfig"} }
+      {"hookName": "createContainer", "path": "/bin/vendor-hook"},
+      {"hookName": "startContainer", "path": "/usr/bin/ldconfig"}
     ]
   }
 }