Update proxy configuration example

Author: mdmintz

seleniumbase/config/proxy_list.py

@@ -8,21 +8,20 @@
 "pytest SOME_TEST.py --proxy=proxy1"
 
 Format of PROXY_LIST server entries:
-* "ip_address:port" OR
-* "server:port"
+* "ip_address:port"  OR  "username:password@ip_address:port"
+* "server:port"  OR  "username:password@server:port"
 (Do NOT include the http:// or https:// in your proxy string!)
 
 Example proxies in PROXY_LIST below are not guaranteed to be active or secure.
 If you don't already have a proxy server to connect to,
 you can try finding one from one of following sites:
 * https://www.proxynova.com/proxy-server-list/country-us/
 * https://www.us-proxy.org/
-* https://hidemy.name/en/proxy-list/?country=US&type=h#list
-* http://proxyservers.pro/proxy/list/protocol/http/country/US/
+* https://proxyservers.pro/proxy/list/protocol/http/country/US/
 """
 
 PROXY_LIST = {
-    "example1": "192.241.132.219:80",  # (Example) - set your own proxy here
+    "example1": "104.198.68.109:3128",  # (Example) - set your own proxy here
     "proxy1": None,
     "proxy2": None,
     "proxy3": None,