Merge branch 'revise-reflashing-info' into 'master'

Update reflashing instructions to avoid battery handling

See merge request Librem5/developer.puri.sm!357
2 jobs for master in 1 minute and 24 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Build
passed build_html #233071
librem5

00:01:02

 
  Deploy
passed publish #233072
librem5

00:00:21