docs(bloody-sunday): replace bloody for sunny

subjects/bloody-sunday/README.md

@@ -1,9 +1,9 @@
-## Bloody Sunday
+## Sunny Sunday
 
 ### Instructions
 
 Let's eliminate Sundays by taking them out of the calendar, making a week only six days long, from `"Monday"` to `"Saturday"`.
 
-Create a function called `bloodySunday` that takes a `Date` as an argument and returns the weekday as a `string`.
+Create a function called `sunnySunday` that takes a `Date` as an argument and returns the weekday as a `string`.
 
 > 01/01/0001 is a Monday.