doc: Update NCS links with new doc platform URLs

Update NCS links with new doc platform URLs.

Signed-off-by: divya pillai <divya.pillai@nordicsemi.no>

Author: divipillai

doc/links.txt

@@ -57,9 +57,11 @@
 .. _`Zigbee CIDs for nRF52840`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf52840/page/COMP/nrf52840/nrf52840_zigbee_cids.html
 .. _`Zigbee CIDs for nRF52833`: https://docs.nordicsemi.com/bundle/comp_matrix_nrf52833/page/COMP/nrf52833/nrf52833_zigbee_cids.html
 
-.. _`Modem library socket options API`: https://docs.nordicsemi.com/bundle/nrfxlib-apis-latest/page/group_nrf_socket_options_sockets.html
-.. _`Modem library socket TLS API`: https://docs.nordicsemi.com/bundle/nrfxlib-apis-latest/page/group_nrf_socket_tls.html
-.. _`Modem library socket flags API`: https://docs.nordicsemi.com/bundle/nrfxlib-apis-latest/page/group_nrf_socket_send_recv_flags.html
+.. ### Source: nrfconnectdocs.nordicsemi.com
+
+.. _`Modem library socket options API`: https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrfxlib/doxygen/html/group__nrf__socket__options__sockets.html
+.. _`Modem library socket TLS API`: https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrfxlib/doxygen/html/group__nrf__socket__tls.html
+.. _`Modem library socket flags API`: https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrfxlib/doxygen/html/group__nrf__socket__send__recv__flags.html
 
 .. ### Source: wikipedia