improve 87. What's the output? with minor changes

Author: hamirmahal

README.md

@@ -2764,9 +2764,9 @@ console.log('I want pizza'[0]);
 
 #### Answer: B
 
-In order to get an character on a specific index in a string, you can use bracket notation. The first character in the string has index 0, and so on. In this case we want to get the element which index is 0, the character `"I'`, which gets logged.
+In order to get a character at a specific index of a string, you can use bracket notation. The first character in the string has index 0, and so on. In this case, we want to get the element with index 0, the character `"I'`, which gets logged.
 
-Note that this method is not supported in IE7 and below. In that case, use `.charAt()`
+Note that this method is not supported in IE7 and below. In that case, use `.charAt()`.
 
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