chore(changelog): Add metrics documentation link #6546

Job	Run time
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	6m 11s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	7m 54s
system-test (sentry-samples-spring-boot-webflux, false, true)	5m 52s
system-test (sentry-samples-spring-boot, false, true)	6m 20s
system-test (sentry-samples-spring-boot-jakarta, false, true)	7m 46s
system-test (sentry-samples-log4j2, false, true)	2m 21s
system-test (sentry-samples-spring-jakarta, false, true)	5m 22s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	8m 51s
system-test (sentry-samples-spring-7, false, true)	4m 32s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	8m 35s
system-test (sentry-samples-jul, false, true)	2m 4s
system-test (sentry-samples-spring, false, true)	4m 10s
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	8m 6s
system-test (sentry-samples-spring-boot-4, false, true)	7m 56s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	8m 32s
system-test (sentry-samples-logback, false, true)	2m 7s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	8m 9s
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	7m 53s
system-test (sentry-samples-console, false, true)	1m 55s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	5m 38s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	8m 26s
	2h 8m 40s

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