Fix README ruby syntax error (#70)

nevans · web-flow · commit 7955cfdfa8dc · 2021-11-22T13:40:41.000+01:00
The following is a very neat DSL, but I'm pretty certain it isn't valid ruby. ;) ```` pin "react" to "https://ga.jspm.io/npm:react@17.0.2/index.js" ````
diff --git a/README.md b/README.md
@@ -43,7 +43,7 @@ For example:
 
 ```rb
 # config/importmaps.rb
-pin "react" to "https://ga.jspm.io/npm:react@17.0.2/index.js"
+pin "react", to: "https://ga.jspm.io/npm:react@17.0.2/index.js"
 ```
 
 means "everytime you see `import React from "react"` 

-Original file line number
+Diff line change
 ```rb
 # config/importmaps.rb
 -pin "react" to "https://ga.jspm.io/npm:[email protected]/index.js"
 +pin "react", to: "https://ga.jspm.io/npm:[email protected]/index.js"
 ```
 means "everytime you see `import React from "react"`