Changed the link for D-Link USB HUB

Closes #89

See merge request docs/docs.beagleboard.io!172

updated introduction to Zephyr RTOS page

See merge request !170

Authored by: Deepak Khatri

Enhance - Simplified and clarified setup of tools, extended inclusion of SMARTHLS tools

See merge request !168

beaglev-fire: specify baud rate to access terminal

See merge request docs/docs.beagleboard.io!169

The command to access the terminal using tio did not specify the baud rate
115200, therefore specify it to establish reliable serial communication.

Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>

beaglev-fire: include steps to flash image using dd

See merge request !167

Merge branch 'main' of https://git.beagleboard.org/docs/docs.beagleboard.io into prajnark_update_flashing

BeaglePlay: add nodered guide

See merge request !96

Remove a non existent reference and fix build error

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Also reword the pre requisites to use :ref:

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Also add a link and capitalise Accel click.
Minor fixes and add note in pre req

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Add some images for illustration

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Add guide on how to use nodered with BeaglePlay

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Erasing the older Branch and Starting Anew...

See merge request !99

Addition of comms cape to capes section of documentation

See merge request !153

Update code-block directives for clarity and accuracy

See merge request !161

Fix all missing links after folder redirect

See merge request !166