Add more proxy URL options to .env.example

Expanded the list of commented PROXY_URL alternatives in .env.example to provide additional proxy service options for developers.

Author: ThatSINEWAVE

.env.example

@@ -29,4 +29,11 @@ EXCLUDED_DOMAINS=UNKNOWN,discord.com,discord.gg,steamcommunity.com,funpay.com,me
 PROXY_URL=https://api.codetabs.com/v1/proxy/?quest=
 # PROXY_URL=https://corbypass.com/?
 # PROXY_URL=https://thingproxy.freeboard.io/fetch/
-# PROXY_URL=https://api.allorigins.win/get?url=
+# PROXY_URL=https://api.allorigins.win/get?url=
+# PROXY_URL=https://api.cors.lol/?url=
+# PROXY_URL=https://cors.x2u.in/?url=
+# PROXY_URL=https://api.thebugging.com/cors-proxy?url=
+# PROXY_URL=https://cors-anywhere.com/
+# PROXY_URL=https://corsproxy-seven.vercel.app/api?url=
+# PROXY_URL=https://eco-cors-proxy.netlify.app/proxy?url=
+# PROXY_URL=https://cors-proxy.htmldriven.com/?url=