q1, md etc. are in seconds not milliseconds

On https://metrics.torproject.org/stats.html#torperf it says:

q1: First quartile of time in milliseconds until receiving the number of bytes in filesize.
md: Median of time in milliseconds until receiving the number of bytes in filesize.
q3: Third quartile of time in milliseconds until receiving the number of bytes in filesize.

However, looking at actual .csv values I get lines like

2021-01-01,5242880,op-nl5,public,2.925,5.07,8.88

and it's not clear what is meant here (in particular as Gnumeric is of the opinion to convert those to 2925, 5.07, 8.88 :)). Pointing to https://gitlab.torproject.org/tpo/network-health/metrics/website/-/blob/master/src/main/R/rserver/rserve-init.R @irl confirmed that those values are actually in seconds.

We should fix the docs in https://gitlab.torproject.org/tpo/network-health/metrics/website/-/blob/master/src/main/resources/web/jsps/stats.jsp accordingly.