One line per sentence and don't use the word "function"

Author: xanni

exercises/square-root/description.md

@@ -4,13 +4,15 @@ We are launching a deep space exploration rocket and we need a way to make sure
 
 The first step in our coordinate calculation involves taking a number as input and finding another number which multiplied by itself will equal our input number, or in other words, finding the square root of our input number.
 
-Because the journey will be very long, we had to make our rocket’s onboard computer very power efficient so it wouldn’t drain the batteries. Unfortunately that means that we can’t rely on fancy math libraries and functions, as they would take more power. Instead we want to calculate or approximate the square root directly.
+Because the journey will be very long, we had to make our rocket’s onboard computer very power efficient so it wouldn’t drain the batteries.
+Unfortunately that means that we can’t rely on fancy math libraries and functions, as they would take more power.
+Instead we want to calculate or approximate the square root directly.
 
-Your task is to implement a function that calculates or approximates the square root of a given number.
+Your task is to implement a calculation of the square root of a given number.
 
 - Try to avoid using the pre-existing math libraries of your language.
 - As input you’ll be given a positive whole number, i.e. 1, 2, 3, 4…
-- The function also only needs to output positive whole numbers.
+- You also only need to output a positive whole number.
 
 Examples of some approaches you could consider are: