[FLINK-35692][docs] Fix the default version of sql gateway OpenAPI #41

Job	Run time
Default (Java 8) / Compile	45m 10s
Pre-compile Checks / Basic QA	10m 32s
Default (Java 8) / E2E (group 1)	2h 46m 14s
Default (Java 8) / Test packaging/licensing	37m 48s
Default (Java 8) / Test (module: core)	36m 57s
Default (Java 8) / E2E (group 2)	2h 47m 52s
Default (Java 8) / Test (module: python)	31m 9s
Default (Java 8) / Test (module: table)	36m 24s
Default (Java 8) / Test (module: connect)	20m 3s
Default (Java 8) / Test (module: tests)	46m 17s
Default (Java 8) / Test (module: misc)	47m 48s
	10h 46m 14s

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