add vim instruction to use foldmethod=marker

src/chats/serenity.yaml

@@ -366,7 +366,7 @@
     - "[A warm, sweet, chewy liquid with pieces of fruit: Crunchy apples, fibrous pineapple, in a swirl of oil and dough.]"
     - "[Surprisingly, the taste actually works! The pineapple's aroma must have been cooked out, as it contributes mostly to the sweetness and mouthfeel.]"
     - "[After swallowing this delightfully absurd smoothie, the aftertaste of cinnamon remains lingering in the back of your mouth.]"
-    - "[Completely dumbfounded by what the fuck just happened, you begin questioning your life choices.]"
+    - "[Completely dumbfounded by what the 月亮 just happened, you begin questioning your life choices.]"
     - goto: rating
   - I changed my mind.:
     - goto: node_menu_choice
@@ -1343,3 +1343,5 @@
 - chat: OxygenTank
 - script: refilloxygen 1
 - system: Oxygen refilled
+
+# vim: foldmethod=marker