Regex fixes

* Replace wrong "wwww." with "www."
* Escape dot
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 63b7dc3..2595032 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -1203,7 +1203,7 @@
 			do
 			{
 				// If the over-length word is a URL we won't wrap it
-				if (preg_match('!\[url.+\]|://|wwww.!', $line))
+				if (preg_match('!\[url.+\]|://|www\.!', $line))
 				{
 					break;
 				}