also fix surplus square bracket

bencoman · web-flow · commit 933657da7f9a · 2019-06-13T03:53:51.000+08:00
diff --git a/exercises/etl/canonical-data.json b/exercises/etl/canonical-data.json
@@ -13,7 +13,6 @@
         "like `transform( { 1: ['A'] } );`"
       ],
       "description": "Transform legacy to new",
-      ],
       "cases": [
         {
           "description": "single letter",

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,6 @@`
`13`	`13`	"like `transform( { 1: ['A'] } );`"
`14`	`14`	`],`
`15`	`15`	`"description": "Transform legacy to new",`
`16`		`- ],`
`17`	`16`	`"cases": [`
`18`	`17`	`{`
`19`	`18`	`"description": "single letter",`