[ES|QL] Add inline docs for SAMPLE command #1825
Description
^^ The SAMPLE command is supported in the ES|QL Kibana editor (currently in tech preview). But inline docs are missing. Should be added for 9.1/8.19
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^^ The SAMPLE command is supported in the ES|QL Kibana editor (currently in tech preview). But inline docs are missing. Should be added for 9.1/8.19