No mention of performance_schema_max_digest_length in PMM3 docs

Looking at PMMv2 docs (https://docs.percona.com/percona-monitoring-and-management/2/setting-up/client/mysql.html), there is this extremely important setting when using the performance schema as query source:

When dealing with long queries, increasing the value of the variable performance_schema_max_digest_length will avoid having query examples truncated.

This incredibly important documentation line is completely missing from PMMv3 docs. Please add this information to the v3 docs and ensure this parameter is searchable.