Update README.md

Author: pgaref

README.md

@@ -24,4 +24,4 @@ Surprisingly, the only thing that tells a server the application triggered the r
 The project code in this repository is crawling two different public proxy websites http://proxyfor.eu/geo.php and http://free-proxy-list.net.
 After collecting the proxy data and filtering the slowest ones it is randomly selecting one of them to query the target url.
 The request timeout is configured at 30 seconds and if the proxy fails to return a response it is deleted from the application proxy list.
-I have to mention that for each request a different agent header is used. This headers are strong in the /data/user_agents.txt file which contains around 900 different agents.
+I have to mention that for each request a different agent header is used. This headers are strong in the **/data/user_agents.txt** file which contains around 900 different agents.