Regex fixes

* Replace wrong "wwww." with "www."
* Escape dot
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
index ca19ab9..7e15c19 100644
--- a/system/helpers/text_helper.php
+++ b/system/helpers/text_helper.php
@@ -460,7 +460,7 @@
 			while (mb_strlen($line) > $charlim)
 			{
 				// 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;
 				}