[DOCS] Update Debian APT repo command (#60679)
[DOCS] Update Debian APT repo command (#60679)

The current `tee` command appends a definition to
`/etc/apt/sources.list.d/elastic-{version}.list`.

This can lead to duplicate lines and significantly slow apt-get
operations.

This updates the command to overwrite rather than append.
gingerwizard/elasticsearch,scorpionvicky/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,robin13/elasticsearch,gingerwizard/elasticsearch,robin13/elasticsearch,scorpionvicky/elasticsearch,scorpionvicky/elasticsearch,nknize/elasticsearch,gingerwizard/elasticsearch,robin13/elasticsearch,robin13/elasticsearch,scorpionvicky/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,gingerwizard/elasticsearch,scorpionvicky/elasticsearch,robin13/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch