Fix schema typo.

Signed-off-by: Daniel Nephin <[email protected]>

compose/config/config_schema_v3.0.json

@@ -270,7 +270,7 @@
         "cpus": {"type": "string"},
         "memory": {"type": "string"}
       },
-      "additionaProperties": false
+      "additionalProperties": false
     },
 
     "network": {