Consistent whitespace

snippets/luhnCheck.md

@@ -6,7 +6,7 @@ tags: math,advanced
 Implementation of the [Luhn Algorithm](https://en.wikipedia.org/wiki/Luhn_algorithm) used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers, National Provider Identifier numbers etc.
 
 - Use `String.prototype.split('')`, `Array.prototype.reverse()` and `Array.prototype.map()` in combination with `parseInt()` to obtain an array of digits.
-- Use `Array.prototype.splice(0,1)` to obtain the last digit.
+- Use `Array.prototype.splice(0, 1)` to obtain the last digit.
 - Use `Array.prototype.reduce()` to implement the Luhn Algorithm.
 - Return `true` if `sum` is divisible by `10`, `false` otherwise.