docs: Caching page fixes (#7655)

Author: morgan-at-cube

docs/pages/product/caching.mdx

@@ -3,7 +3,7 @@ redirect_from:
   - /caching
 ---
 
-# Overview
+# Caching Overview
 
 <div style={{ textAlign: "center" }}>
   <img
@@ -19,7 +19,7 @@ and is active by default.
 
 Cube's [in-memory cache](#in-memory-cache) acts as a buffer for your database
 when there's a burst of requests hitting the same data from multiple concurrent
-users while [pre-aggregations](#pre-aggregations) are designed to provide the
+users. [Pre-aggregations](#pre-aggregations) are designed to provide the
 right balance between time to insight and querying performance.
 
 To reset the **in-memory** cache in development mode, just restart the server.