Fix command reference in Javadoc [DATAREDIS-1008]

[spring-projects-issues]

Mark Paluch opened DATAREDIS-1008 and commented

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Affects: 2.2 RC1 (Moore), 2.1.9 (Lovelace SR9)

Referenced from: pull request #466, and commits 1ee8200, 0ca256d

Backported to: 2.1.10 (Lovelace SR10)