Tidied up 'Luhn Checksum' operation

src/core/operations/LuhnChecksum.mjs

@@ -19,8 +19,8 @@ class LuhnChecksum extends Operation {
         super();
 
         this.name = "Luhn Checksum";
-        this.module = "Crypto";
-        this.description = "The Luhn algorithm, also known as the modulus 10 or mod 10 algorithm, is a simple checksum formula used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers, Canadian Social Insurance Numbers.";
+        this.module = "Default";
+        this.description = "The Luhn algorithm, also known as the modulus 10 or mod 10 algorithm, is a simple checksum formula used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers and Canadian Social Insurance Numbers.";
         this.infoURL = "https://wikipedia.org/wiki/Luhn_algorithm";
         this.inputType = "string";
         this.outputType = "number";