Correct a typo in "slice".

README.md

@@ -11,6 +11,7 @@
 * [Anagrams of string (with duplicates)](#anagrams-of-string-with-duplicates)
 * [Average of array of numbers](#average-of-array-of-numbers)
 * [Capitalize first letter](#capitalize-first-letter)
+* [Capitalize first letter.](#capitalize-first-letter.)
 * [Count occurrences of a value in array](#count-occurrences-of-a-value-in-array)
 * [Current URL](#current-url)
 * [Curry](#curry)
@@ -75,6 +76,14 @@ var average = arr =>
 
 ### Capitalize first letter
 
+Use `slice(0,1)` and `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
+
+```js
+var capitalize = str => str.slice(0, 1).toUpperCase() + str.slice(1);
+```
+
+### Capitalize first letter
+
 Use `sice(0,1)` and `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
 
 ```js

snippets/capitalize-first-letter.md

@@ -1,6 +1,6 @@
 ### Capitalize first letter
 
-Use `sice(0,1)` and `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
+Use `slice(0,1)` and `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
 
 ```js
 var capitalize = str => str.slice(0, 1).toUpperCase() + str.slice(1);