Fix markdown lint warning #2808

Job	Run time
detect-changes	7s
lint-misspell-sanitycheck / run-sanitycheck	3s
lint-misspell-sanitycheck / run-misspell	4s
build-test-azure	0s
lint-dotnet-format	0s
build-test-aspnet	0s
build-test-geneva	0s
build-test-extensions	0s
build-test-host	0s
build-test-onecollector	0s
build-test-eventcounters	0s
build-test-persistentstorage	0s
build-test-process	0s
build-test-owin	0s
build-test-processdetector	0s
build-test-processruntime	0s
build-test-redis	0s
build-test-redis-integration	0s
build-test-runtime	0s
build-test-wcf	0s
build-test-solution	0s
verify-aot-compat	0s
lint-md / run-markdownlint	8s
build-test	3s
	25s

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