New translations introduction.mdx (Russian)

Author: benface

website/src/pages/ru/subgraphs/querying/introduction.mdx

@@ -1,6 +1,6 @@
 ---
 title: Запрос The Graph
-sidebarTitle: Introduction
+sidebarTitle: Введение
 ---
 
 To start querying right away, visit [The Graph Explorer](https://thegraph.com/explorer).