Boot Media (Software Image): Flashing Instructions using Raspberry Pi Imager

Added another method to prepare bootable SD card using the Raspberry Pi Imager, imaging utility.

Flashing SD cards has always been a little bit tricky choosing the wrong drive may result in data loss or even worse accidentally wiping computer’s install. This merge request adds a imaging utility instructions alternate to the exsisting terminal based dd method for flashing images. Instructions include with step-by-step with screenshots a simpler way to flash an image to SD card.

And, also there are fixes resolve build errors and warnings caused by Ruby version upgrades and deprecated methods, which prevented the website from building on unstable.

Reference:

• https://www.raspberrypi.com/news/raspberry-pi-imager-imaging-utility/
• https://salsa.debian.org/extrepo-team/extrepo-data/-/blob/master/repos/debian/raspberrypi.yaml
• https://manpages.debian.org/bookworm/extrepo/extrepo.1p.en.html

Signed-off-by: Kurva Prashanth krvprashanth@riseup.net