Fix broken link for examples (#1430)

Author: jkklapp

README.md

@@ -87,7 +87,7 @@ You can checkout these example CodePens:
 
 ## More information
 
-Take a look at the [folder with examples](showcase/examples/) or check out some docs:
+Take a look at the [folder with examples](docs/examples) or check out some docs:
 
 - Common concepts:
   * [Scales and Data](docs/scales-and-data.md) about how the attributes can be adjusted.