Would be good to improve docs and provide some guidance on tuning scrape delay

[bcanvural]

Hi team, thanks for a much needed project to improve our cloudflare observability. Really excited about this project. Well done!

I'm struggling however to find the right scraping delay for my project. I see that there's a scrape delay env var. When i check the code i see that code is substracting this value from time.Now(), and then that value minus 1 minute is the time range for which metrics are fetched?
Our sysdig monitor scrapes our metrics every 10s. I initially had the idea to just set the cloudflare exporter's scrape delay to 10s, but i'm not entirely sure if this is correct approach. Specifically I'm doing a sum(rate(cloudflare_zone_requests_origin_status_country_host metric[$__interval]) by (host)). I set the minInterval on UI to be 60s since you guys are looking back 1m as i describe above. Again, not sure. I'm comparing the nubmers i get from this to our nginx dashboard which i tend to trust more i guess but numbers dont seem to match.
In general would be good i guess if docs could be updated with some examples and some guidance on scrape intervals etc. Thanks again for an amazing project!