Fix documentation links in README.md #648

Job	Run time
lint_markdown_files	1m 11s
test (11, GSON_CONFIG_PARSER)	6m 55s
integration_tests / test	5s
test (11, JACKSON_CONFIG_PARSER)	6m 52s
test (11, JSON_CONFIG_PARSER)	8m 36s
fullstack_production_suite / test	4s
test (17, GSON_CONFIG_PARSER)	5m 2s
test (17, JACKSON_CONFIG_PARSER)	6m 16s
test (11, JSON_SIMPLE_CONFIG_PARSER)	5m 32s
test (17, JSON_CONFIG_PARSER)	7m 19s
test (17, JSON_SIMPLE_CONFIG_PARSER)	7m 4s
snapshot	-1s
publish	-1s
	54m 54s

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