Fix typo in Getting Started

stefandesu · web-flow · commit 9a88e231f1cf · 2018-07-30T13:28:30.000+02:00
A $-sign was missing.
diff --git a/learn/getting-started-step-by-step.md b/learn/getting-started-step-by-step.md
@@ -281,7 +281,7 @@ For this example we introduce a new JSON Schema resource and for both properties
 
 ```json
 {
-  "id": "https://example.com/geographical-location.schema.json",
+  "$id": "https://example.com/geographical-location.schema.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "title": "Longitude and Latitude",
   "description": "A geographical coordinate on a planet (most commonly Earth).",

Original file line number	Diff line number	Diff line change
`@@ -281,7 +281,7 @@ For this example we introduce a new JSON Schema resource and for both properties`
`281`	`281`
`282`	`282`	```json
`283`	`283`	`{`
`284`		`- "id": "https://example.com/geographical-location.schema.json",`
	`284`	`+ "$id": "https://example.com/geographical-location.schema.json",`
`285`	`285`	`"$schema": "http://json-schema.org/draft-07/schema#",`
`286`	`286`	`"title": "Longitude and Latitude",`
`287`	`287`	`"description": "A geographical coordinate on a planet (most commonly Earth).",`