Update tidb-cloud/connect-to-tidb-cluster-serverless.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: ljun0712

tidb-cloud/connect-to-tidb-cluster-serverless.md

@@ -1,6 +1,6 @@
 ---
 title: Connect to Your TiDB Cluster
-summary: Learn how to connect to your {{{ .starter }}}, {{{ .essential }}}, or {{{ .premium}}} cluster via different methods.
+summary: Learn how to connect to your {{{ .starter }}}, {{{ .essential }}}, or {{{ .premium }}} cluster via different methods.
 ---
 
 # Connect to Your TiDB Cluster