fix IIS reverse proxy doc (#16246)

diff --git a/docs/content/doc/usage/reverse-proxies.en-us.md b/docs/content/doc/usage/reverse-proxies.en-us.md
index e2fdb1d2b7a80cf2f0f642e0fab2f719dca71826..b339048d6843cfba32a3734420b7e856680e8d97 100644 (file)
--- a/docs/content/doc/usage/reverse-proxies.en-us.md
+++ b/docs/content/doc/usage/reverse-proxies.en-us.md
@@ -221,6 +221,9 @@ If you wish to run Gitea with IIS. You will need to setup IIS with URL Rewrite a
 ```xml
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
+    <system.web>
+        <httpRuntime requestPathInvalidCharacters="" />
+    </system.web>
     <system.webServer>
         <security>
           <requestFiltering>