Update descriptions for pad and toDecimalMark

Missing prototypes in the code explanations.

snippets/pad.md

@@ -5,7 +5,7 @@ tags: string,beginner
 
 Pads a string on both sides with the specified character, if it's shorter than the specified length.
 
-Use `String.padStart()` and `String.padEnd()` to pad both sides of the given string.
+Use `String.prototype.padStart()` and `String.prototype.padEnd()` to pad both sides of the given string.
 Omit the third argument, `char`, to use the whitespace character as the default padding character.
 
 ```js

snippets/toDecimalMark.md

@@ -3,7 +3,9 @@ title: toDecimalMark
 tags: utility,math,beginner
 ---
 
-Use `toLocaleString()` to convert a float-point arithmetic to the [Decimal mark](https://en.wikipedia.org/wiki/Decimal_mark) form. It makes a comma separated string from a number.
+Converts a number to a decimal mark formatted string.
+
+Use `Number.prototype.toLocaleString()` to convert the numbre to decimal mark format.
 
 ```js
 const toDecimalMark = num => num.toLocaleString('en-US');