added title to recipe in example

rswamina · rswamina · commit e03daae8658b · 2022-01-30T22:30:01.000Z
diff --git a/_episodes/06-preprocessor.md b/_episodes/06-preprocessor.md
@@ -95,6 +95,7 @@ description.
 ---
 documentation:
   description: Reproducing Ed Hawkins' warming stripes visualization
+  title: This recipe produces warming stripes.
 ```
 
 Notice that `yaml` always requires 2 spaces indentation between the different
