[DOCS] Minor tweak to the link to MetricStore link (#3714)
[DOCS] Minor tweak to the link to MetricStore link (#3714)

* [DOCS] Minor tweak to the link to MetricStore link

The previous fix to the link didn't resolve properly.  Adding an additional upstream folder change to get to the correct path.  This should get it to /docs/guides/setup/configuring_metadata_stores/how_to_configure_a_metricsstore.md as expected.

* [DOCS] Revised link to MetricsStore

Co-authored-by: Chetan Kini <53f432bedfe8a19567d70727f454ebd1d76235ae@superconductive.com>
great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations