Update en.yaml

added 4 spaces in line 539

coursedata/adventures/en.yaml

@@ -536,7 +536,7 @@ adventures:
                    Can you think of more line to add to your restaurant code? For example, can you ask the guests what they'd like to drink, tell them the price, or wish them a pleasant meal? 
                    
             2: 
-            story_text: |
+                story_text: |
                    ## Restaurant
                    In level 2 you could expand your restaurant by using variables. In level 1 Hedy could only echo the order once and only remember the last thing that was ordered. 
                    Now you can use variables and Hedy can remember both the food and the drinks!