doc: Minor doc fixes

[divipillai]

Minor doc fixes to the NCS docs.
Also, covers NCSIDB-1511, 2nd Point.

[NordicBuilder]

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Build number: 2

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You can find the documentation preview for this PR here.

Preview links for modified nRF Connect SDK documents:

https://ncsdoc.z6.web.core.windows.net/PR-21169/nrf/libraries/modem/at_params.html
https://ncsdoc.z6.web.core.windows.net/PR-21169/nrf/applications/nrf_desktop/doc/ble_bond.html
https://ncsdoc.z6.web.core.windows.net/PR-21169/nrf/applications/nrf_desktop/doc/usb_state_pm.html
https://ncsdoc.z6.web.core.windows.net/PR-21169/nrf/samples/bluetooth/peripheral_uart/README.html
https://ncsdoc.z6.web.core.windows.net/PR-21169/nrf/scripts/docker/README.html