Fix broken sql client templates doc link #111

Job	Run time
CI-CD / CI (ubuntu-latest, 11, MSSQL-2017-latest) / Run tests	1m 34s
CI-CD / CI (ubuntu-latest, 11, MSSQL-2019-latest) / Run tests	1m 39s
CI-CD / CI (ubuntu-latest, 11, DB2-11.5) / Run tests	15m 1s
CI-CD / CI (ubuntu-latest, 11, SQL-templates) / Run tests	5m 44s
CI-CD / CI (ubuntu-latest, 11, MariaDB-10.4) / Run tests	3m 8s
CI-CD / CI (ubuntu-latest, 21, MSSQL-2019-latest) / Run tests	1m 33s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-10) / Run tests	4m 8s
CI-CD / CI (ubuntu-latest, 21, MySQL-5.7) / Run tests	2m 6s
CI-CD / CI (ubuntu-latest, 21, MariaDB-10.4) / Run tests	2m 6s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-9) / Run tests	4m 11s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-11) / Run tests	4m 7s
CI-CD / CI (ubuntu-latest, 11, MySQL-8.0) / Run tests	2m 12s
CI-CD / CI (ubuntu-latest, 11, MySQL-5.6) / Run tests	2m 11s
CI-CD / CI (ubuntu-latest, 21, PostgreSQL-11) / Run tests	4m 8s
CI-CD / CI (ubuntu-latest, 11, MySQL-5.7) / Run tests	2m 6s
CI-CD / CI (ubuntu-latest, 21, Oracle-23) / Run tests	1m 56s
CI-CD / Deploy to OSSRH / Deploy to OSSRH	1m 46s
CI-CD / Deploy to OSSRH / Deploy (Oracle) to OSSRH	45s
	1h 0m 21s

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