Docs: Convert sys.shards table schema table to list-table markup
Docs: Convert sys.shards table schema table to list-table markup

The list-table markup is easier to edit/extend than the grid table
markup.

EvilMcJerkface/crate,crate/crate,EvilMcJerkface/crate,crate/crate,crate/crate,EvilMcJerkface/crate