Browsertime documentation : fix volume path (#3412)
Browsertime documentation : fix volume path (#3412)

On the 'details' page, the Docker volume path was not correct: ```/browsertime-result```.

Fixed using the correct pag: ```/browsertime```, which I found on the 'installation' page: https://www.sitespeed.io/documentation/browsertime/installation/

Co-authored-by: Peter Hedenskog <4b8373d016f277527198385ba72fda0feb5da015@soulgalore.com>
sitespeedio/sitespeed.io,sitespeedio/sitespeed.io,sitespeedio/sitespeed.io,sitespeedio/sitespeed.io