Update instructions.md

The instructions don't quite follow the same format as other exercises: `file_name.function_name` vs `function_name`.

Passing the tests of exercise 3 requires that an empty list returns false, which is non-obvious (no birds record ~ [0]?)

Maybe change the test, or change the docs to reflect this

exercises/concept/bird-count/.docs/instructions.md

@@ -8,50 +8,50 @@ You have chosen to store the data as a list of integers. The first number in the
 
 ## 1. Check how many birds visited today
 
-Implement the `bird_count.today` function. It should take a list of daily bird counts and return today's count. If the list is empty, it should return `0`.
+Implement the `today` function. It should take a list of daily bird counts and return today's count. If the list is empty, it should return `0`.
 
 ```gleam
-bird_count.today([2, 5, 1])
+today([2, 5, 1])
 // -> 2
 ```
 
 ## 2. Increment today's count
 
-Implement the `bird_count.increment_day_count` function. It should take a list of daily bird counts and increment the today's count by 1. If the list is empty, return `[1]`.
+Implement the `increment_day_count` function. It should take a list of daily bird counts and increment the today's count by 1. If the list is empty, return `[1]`.
 
 ```gleam
-bird_count.increment_day_count([4, 0, 2])
+increment_day_count([4, 0, 2])
 // -> [5, 0, 2]
 ```
 
 ## 3. Check if there was a day with no visiting birds
 
-Implement the `bird_count.has_day_without_birds` function. It should take a list of daily bird counts. It should return `True` if there was at least one day when no birds visited the garden, and `False` otherwise.
+Implement the `has_day_without_birds` function. It should take a list of daily bird counts. It should return `True` if there was at least one day when no birds visited the garden, and `False` otherwise. If the list is empty - this counts as no birds being recorded _yet_; return `False`.
 
 ```gleam
-bird_count.has_day_without_birds([2, 0, 4])
+has_day_without_birds([2, 0, 4])
 // -> True
 
-bird_count.has_day_without_birds([3, 8, 1, 5])
+has_day_without_birds([3, 8, 1, 5])
 // -> False
 ```
 
 ## 4. Calculate the total number of visiting birds
 
-Implement the `bird_count.total` function. It should take a list of daily bird counts and return the total number that visited your garden since you started collecting the data.
+Implement the `total` function. It should take a list of daily bird counts and return the total number that visited your garden since you started collecting the data.
 
 ```gleam
-bird_count.total([4, 0, 9, 0, 5])
+total([4, 0, 9, 0, 5])
 // -> 18
 ```
 
 ## 5. Calculate the number of busy days
 
 Some days are busier than others. A busy day is one where five or more birds have visited your garden.
 
-Implement the `bird_count.busy_days` function. It should take a list of daily bird counts and return the number of busy days.
+Implement the `busy_days` function. It should take a list of daily bird counts and return the number of busy days.
 
 ```gleam
-bird_count.busy_days([4, 5, 0, 0, 6])
+busy_days([4, 5, 0, 0, 6])
 // -> 2
 ```