overview: update a link (#623)

Via: pingcap/docs-cn#890
pingcap · Sep 17, 2018 · e5d9615 · e5d9615
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commit e5d9615
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/overview.md b/overview.md
@@ -14,7 +14,7 @@ TiDB (The pronunciation is: /'taɪdiːbi:/ tai-D-B, etymology: titanium) is an o
 
 - __MySQL compatibility__
 
-    Easily replace MySQL with TiDB to power your applications without changing a single line of code [in most cases](sql/mysql-compatibility.md) and still benefit from the MySQL ecosystem.
+    Easily replace MySQL with TiDB to power your applications without changing a single line of code [in most cases](https://www.pingcap.com/docs/sql/mysql-compatibility/) and still benefit from the MySQL ecosystem.
 
 - __Distributed transaction__