Minor example fix in Number helper
Added 1.6.4 to changelog page
diff --git a/user_guide/helpers/number_helper.html b/user_guide/helpers/number_helper.html
index 9e0e680..c3a8296 100644
--- a/user_guide/helpers/number_helper.html
+++ b/user_guide/helpers/number_helper.html
@@ -74,7 +74,7 @@
 <p>Formats a numbers as bytes, based on size, and adds the appropriate suffix.  Examples:</p>

 

 <code>

-echo byte_format(456); // Returns 456.0 Bytes<br />

+echo byte_format(456); // Returns 456 Bytes<br />

 echo byte_format(4567); // Returns 4.5 KB<br />

 echo byte_format(45678); // Returns 44.8 KB<br />

 echo byte_format(456789); // Returns 447.8 KB<br />