Types: Clarified where to use parenthesis in numbers to strings convertion

Fixes gh-870

Author: Vihan Bhargava

pages/Types.html

@@ -205,7 +205,7 @@ <h3 id="Parsing_Numbers"> Parsing Numbers </h3>
 parseFloat( "10.10" ) = 10.1
 </code></pre>
 <h3 id="Numbers_to_Strings"> Numbers to Strings </h3>
-<p>When appending numbers to string, the result is always a string. The operator is the same, so be careful: If you want to add numbers and then append them to a string, put parentheses around them:
+<p>When appending numbers to string, the result is always a string. The operator is the same, so be careful: If you want to add numbers and then append them to a string, put parentheses around the numbers:
 </p>
 <pre><code data-lang="javascript">"" + 1 + 2; // "12"
 "" + ( 1 + 2 ); // "3"