Merge pull request #4388 from esl/muc-docs-fix #1169

Job	Run time
dialyzer on OTP 26.2.5.2	4m 30s
dynamic domains pgsql_mnesia on OTP 27.0.1	21m 32s
internal_mnesia on OTP 27.0.1	20m 24s
dynamic domains mysql_redis on OTP 27.0.1	20m 47s
edoc on OTP 26.2.5.2	2m 1s
pgsql_mnesia on OTP 27.0.1	23m 56s
dynamic domains odbc_mssql_mnesia on OTP 27.0.1	21m 51s
mysql_redis on OTP 27.0.1	22m 56s
dynamic domains pgsql_mnesia on OTP 26.2.5.2	20m 45s
odbc_mssql_mnesia on OTP 27.0.1	25m 14s
ldap_mnesia on OTP 27.0.1	21m 20s
small_tests on OTP 26.2.5.2	7m 25s
ubuntu_xenial package	4m 50s
elasticsearch_and_cassandra_mnesia on OTP 27.0.1	8m 5s
small_tests on OTP 27.0.1	7m 8s
xref on OTP 26.2.5.2	1m 49s
ldap_mnesia on OTP 26.2.5.2	19m 26s
pgsql_mnesia on OTP 26.2.5.2	24m 16s
coveralls_webhook	0s
	4h 38m 15s

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