fix

replaced .md with .html

Author: NoelStephensUnity

com.unity.netcode.gameobjects/Runtime/HelpUrls.cs

@@ -10,8 +10,8 @@ internal static class HelpUrls
         public const string NetworkManager = k_BaseManualUrl + "components/core/networkmanager.html";
         public const string NetworkObject = k_BaseManualUrl + "components/core/networkobject.html";
         public const string NetworkAnimator = k_BaseManualUrl + "components/helper/networkanimator.html";
-        public const string NetworkRigidbody = k_BaseManualUrl + "components/helper/networkrigidbody.md";
-        public const string NetworkRigidbody2D = k_BaseManualUrl + "components/helper/networkrigidbody.md";
+        public const string NetworkRigidbody = k_BaseManualUrl + "components/helper/networkrigidbody.html";
+        public const string NetworkRigidbody2D = k_BaseManualUrl + "components/helper/networkrigidbody.html";
         public const string RigidbodyContactEventManager = k_BaseApiUrl + ".Components.RigidbodyContactEventManager.html";
         public const string NetworkTransform = k_BaseManualUrl + "components/helper/networktransform.html";
         public const string AnticipatedNetworkTransform = k_BaseManualUrl + "advanced-topics/client-anticipation.html";