Update shard memory usage after increase of default values (#1810)
Update shard memory usage after increase of default values (#1810)

https://github.com/prometheus/prometheus/pull/5267 increase the defaults
by 5 times

Signed-off-by: Christian Simon <088e16a1019277b15d58faf0541e11910eb756f6@swine.de>
prometheus/docs,prometheus/docs,prometheus/docs