Update snippet descriptions

snippets/indexOfAll.md

@@ -3,14 +3,14 @@ title: indexOfAll
 tags: array,intermediate
 ---
 
-Returns all indices of `val` in an array.
-If `val` never occurs, returns `[]`.
+Returns all indexes of `val` in an array.
+If `val` never occurs, returns an empty array.
 
-- Use `Array.prototype.reduce()` to loop over elements and store indices for matching elements.
-- Return the array of indices.
+- Use `Array.prototype.reduce()` to loop over elements and store indexes for matching elements.
 
 ```js
-const indexOfAll = (arr, val) => arr.reduce((acc, el, i) => (el === val ? [...acc, i] : acc), []);
+const indexOfAll = (arr, val) =>
+  arr.reduce((acc, el, i) => (el === val ? [...acc, i] : acc), []);
 ```
 
 ```js