Update data snippets

snippets/DataTable.md

@@ -1,12 +1,12 @@
 ---
 title: DataTable
-tags: components,array,beginner
+tags: components,beginner
 ---
 
 Renders a table with rows dynamically created from an array of primitives.
 
 - Render a `<table>` element with two columns (`ID` and `Value`).
-- Use `Array.prototype.map()` to render every item in `data` as a `<tr>` element, consisting of its index and value, give it a `key` produced from the concatenation of the two.
+- Use `Array.prototype.map()` to render every item in `data` as a `<tr>` element with an appropriate `key`.
 
 ```jsx
 const DataTable = ({ data }) => {