New translations introduction.mdx (Russian)

Author: benface

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

@@ -1,6 +1,6 @@
 ---
 title: Introduction to Subgraph Development
-sidebarTitle: Introduction
+sidebarTitle: Введение
 ---
 
 To start coding right away, go to [Developer Quick Start](/subgraphs/quick-start/).