Update rippled repo URL

Fix #2070.

content/references/http-websocket-apis/public-api-methods/subscription-methods/subscribe.ja.md

@@ -9,7 +9,7 @@ labels:
   - スマートコントラクト
 ---
 # subscribe
-[[ソース]](https://github.com/ripple/rippled/blob/master/src/ripple/rpc/handlers/Subscribe.cpp "Source")
+[[ソース]](https://github.com/XRPLF/rippled/blob/master/src/ripple/rpc/handlers/Subscribe.cpp "Source")
 
 `subscribe`メソッドは、特定のイベントが発生した場合に、定期的に通知するようサーバーに要求します。
 

content/references/http-websocket-apis/public-api-methods/subscription-methods/subscribe.md

@@ -9,7 +9,7 @@ labels:
   - Smart Contracts
 ---
 # subscribe
-[[Source]](https://github.com/ripple/rippled/blob/master/src/ripple/rpc/handlers/Subscribe.cpp "Source")
+[[Source]](https://github.com/XRPLF/rippled/blob/master/src/ripple/rpc/handlers/Subscribe.cpp "Source")
 
 The `subscribe` method requests periodic notifications from the server when certain events happen.
 

content/references/http-websocket-apis/public-api-methods/subscription-methods/unsubscribe.ja.md

@@ -9,7 +9,7 @@ labels:
   - スマートコントラクト
 ---
 # unsubscribe
-[[ソース]](https://github.com/ripple/rippled/blob/master/src/ripple/rpc/handlers/Unsubscribe.cpp "Source")
+[[ソース]](https://github.com/XRPLF/rippled/blob/master/src/ripple/rpc/handlers/Unsubscribe.cpp "Source")
 
 `unsubscribe`コマンドはサーバーに対して、特定のサブスクリプションまたは一連のサブスクリプションへのメッセージ送信の停止を指示します。
 

content/references/http-websocket-apis/public-api-methods/subscription-methods/unsubscribe.md

@@ -9,7 +9,7 @@ labels:
   - Smart Contracts
 ---
 # unsubscribe
-[[Source]](https://github.com/ripple/rippled/blob/master/src/ripple/rpc/handlers/Unsubscribe.cpp "Source")
+[[Source]](https://github.com/XRPLF/rippled/blob/master/src/ripple/rpc/handlers/Unsubscribe.cpp "Source")
 
 The `unsubscribe` command tells the server to stop sending messages for a particular subscription or set of subscriptions.