Refactor dead links in the documents

presto-docs/src/main/sphinx/connector/clickhouse.rst

@@ -143,9 +143,8 @@ SQL support
 -----------
 
 The connector provides read and write access to data and metadata in
-a ClickHouse catalog. In addition to the :ref:`globally available
-<sql-globally-available>` and :ref:`read operation <sql-read-operations>`
-statements, the connector supports the following features:
+a ClickHouse catalog. In addition to the globally available and
+read operation statements, the connector supports the following features:
 
 * :doc:`/sql/insert`
 * :doc:`/sql/truncate`

presto-docs/src/main/sphinx/connector/googlesheets.rst

@@ -99,6 +99,5 @@ fetching the sheet data for every table, unless it is already cached.
 SQL support
 -----------
 
-The connector provides :ref:`globally available <sql-globally-available>` and
-:ref:`read operation <sql-read-operations>` statements to access data and
+The connector provides globally available and read operation statements to access data and
 metadata in Google Sheets.

presto-docs/src/main/sphinx/installation/jdbc.rst

@@ -50,6 +50,8 @@ The above URL can be used as follows to create a connection:
     String url = "jdbc:presto://example.net:8080/hive/sales";
     Connection connection = DriverManager.getConnection(url, "test", null);
 
+.. _jdbc-java-connection:
+
 Connection Parameters
 ---------------------
 
@@ -75,6 +77,8 @@ These methods may be mixed; some parameters may be specified in the URL
 while others are specified using properties. However, the same parameter
 may not be specified using both methods.
 
+.. _jdbc-parameter-reference:
+
 Parameter Reference
 -------------------