[DOCS] Add issue information about issue tags to contributing docs (#1755)
[DOCS] Add issue information about issue tags to contributing docs (#1755)

Signed-off-by: James Campbell <1f5d57c840f6bc62c607eb3983b0ef428cfb4438@gmail.com>

Co-authored-by: Rob Lim <aedc62539ef67beedd6fd847e9d37fbb07fae360@gmail.com>
great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations