Fix documentation links in README.md #649

Job	Run time
lint_markdown_files	1m 6s
fullstack_production_suite / test	5s
test (11, GSON_CONFIG_PARSER)	6m 18s
test (11, JSON_SIMPLE_CONFIG_PARSER)	6m 35s
test (17, GSON_CONFIG_PARSER)	5m 53s
integration_tests / test	4s
test (11, JACKSON_CONFIG_PARSER)	7m 22s
test (11, JSON_CONFIG_PARSER)	6m 15s
test (17, JACKSON_CONFIG_PARSER)	5m 1s
test (17, JSON_SIMPLE_CONFIG_PARSER)	7m 19s
test (17, JSON_CONFIG_PARSER)	5m 33s
publish	0s
snapshot	0s
	51m 31s

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