Update README.md

Author: sam-lippert

README.md

@@ -6,12 +6,15 @@ Use the [editor](https://stately.ai/editor) to create and export your state mach
 ## API
 
 Read current state:
+
 `https://state.do/:key`
 
 Send event to machine:
+
 `https://state.do/:key/:event`
 
 Initialize machine:
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 `https://state.do/:key?{"id":"fetch","initial":"init","states":{"init":{"on":{"FETCH":"loading"}},"loading":{"callback":"https://fetcher.do/60sec/https://example.com/","on":{"4XX":"fault","5XX":"failure","*":"success"}},"failure":{"callback":"https://alarms.do/?fromnow=10sec&callback=https://state.do/:key/RETRY","on":{"RETRY":{"target":"loading"}}},"fault":{"callback":"https://example.logging.do/error?message=","type":"final"},"success":{"callback":"https://graphology.do.cf/:key?newnode?example|","type":"final"}}}`
 
 ## Callbacks