message: Update grammar/spelling on live query section
  Nit, misspelling in "cache," and updating the grammar a bit.
diff: @@ -380,9 +380,9 @@ const planets = memory.cache.query((q) => q.findRecords('planet').sort('name'));
  ### Live queries
  -On a memory source's cach, you can subscribe to a
  -[`SyncLiveQuery`](/api/record-cache/classes/SyncLiveQuery.md). For that you need
  -to request a [`SyncLiveQuery`](/api/record-cache/classes/SyncLiveQuery.md)
  +You may subscribe to a
  +[`SyncLiveQuery`](/api/record-cache/classes/SyncLiveQuery.md) on a memory source's cache.
  +To do so, request a [`SyncLiveQuery`](/api/record-cache/classes/SyncLiveQuery.md)
  instance and then subscribe to changes. By default the
  [`SyncLiveQuery`](/api/record-cache/classes/SyncLiveQuery.md) will observe cache
  `patch` events with a debounce. The subscription callback will be called on
  