fixed a typo

classes/handler/public.php

@@ -166,7 +166,7 @@ class Handler_Public extends Handler {
 			$feed['articles'] = array();
 
 			while ($line = $this->dbh->fetch_assoc($result)) {
-				$line["content_preview"]] = truncate_string(strip_tags($line["content_preview"]), 100, '...');
+				$line["content_preview"] = truncate_string(strip_tags($line["content_preview"]), 100, '...');
 				foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_QUERY_HEADLINES) as $p) {
 					$line = $p->hook_query_headlines($line, 100);
 				}