Test

Enhance optional plugin docs for Spring Gateway. #1824

Job	Run time
Build	8m 0s
jdk17-with-gson-scenario-jdk17	1m 2s
resttemplate-6.x-scenario-jdk17	1m 4s
jersey-3.x-scenario-jdk17	1m 18s
jetty-thread-pool-scenario-jdk17	2m 31s
jetty-11.x-thread-pool-scenario-jdk17	1m 3s
grizzly-2.3.x-4.x-scenario-jdk17	2m 11s
grizzly-2.3.x-4.x-workthreadpool-scenario-jdk17	1m 52s
jetty-11.x-scenario-jdk17	1m 33s
jetty-10.x-scenario-jdk17	1m 33s
	22m 7s

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