Complete description of /allocation/compute

Signed-off-by: Matt Ray <github@mattray.dev>

docs/swagger.json

@@ -19,7 +19,7 @@
     "/allocation/compute": {
       "get": {
         "summary": "query for costs and resources allocated to Kubernetes workloads",
-        "description": "The standard OpenCost API query for costs and resources allocated to Kubernetes workloads. You may specify the `window` date range, the Kubernetes primitive `aggregate` on, ",
+        "description": "The standard OpenCost API query for costs and resources allocated to Kubernetes workloads. You may specify the `window` date range, the Kubernetes primitive to `aggregate` on, the `step` for the duration of returned sets, and the `resolution` for the duration to use for Prometheus queries.",
         "parameters": [
           {
           "name": "window",