doc: Update link of the Ignion's antenna tuning page

Update link of the Ignion's antenna tuning page

Signed-off-by: divya pillai <[email protected]>

Author: divipillai

docs/antennatuning.rst

@@ -17,7 +17,7 @@ The Thingy:91 X board files define the default AT commands that are sent to the
 The default values for the Kconfig options used when building firmware for the Thingy:91 X target can be found in the `Thingy:91 X nRF9151 board configuration`_ file.
 
 You can modify the default values to optimize the antenna tuning of the Thingy:91 X for specific usage scenarios.
-Ignion, the manufacturer of the antenna used on the Thingy:91 X, explains in the `Ignion Antenna Technology Powering The-Nordic-Thingy 91 X`_ application note how the antenna tuning can be optimized for specific usage scenarios by adjusting the switching states of the antenna.
+Ignion, the manufacturer of the antenna used on the Thingy:91 X, explains in the `Ignion Antenna Technology Powering The-Nordic-Thingy 91 X`_ design guide how the antenna tuning can be optimized for specific usage scenarios by adjusting the switching states of the antenna.
 
 The antenna switch states can be set in the :file:`prj.conf` file by changing the configuration of the ``%XMIPIRFFECTRL`` AT command or during runtime by issuing the ``AT%XMIPIRFFECTRL=<new_antenna_switch_states>`` AT command.
 

docs/links.txt

@@ -40,7 +40,7 @@
 
 .. _`Interactive BOM PCA20065 1.0.0.`: https://htmlpreview.github.io/?https://github.com/hello-nrfcloud/firmware/blob/main/docs/pca20065_1_0_0.html
 
-.. _`Ignion Antenna Technology Powering The-Nordic-Thingy 91 X`: https://ignion.io/files/AN_Ignion-antenna-technology-powering-the-nordic-thingy91x
+.. _`Ignion Antenna Technology Powering The-Nordic-Thingy 91 X`: https://ignion.io/whitepapers-and-design-guides/powering-nordic-thingy91x/
 
 .. _`nRF5340 application firmware`: https://github.com/hello-nrfcloud/firmware/releases/download/v2.0.1/connectivity-bridge-v2.0.1-thingy91x-nrf53-app.hex
 .. _`nRF5340 network firmware`: https://github.com/hello-nrfcloud/firmware/releases/download/v2.0.1/connectivity-bridge-v2.0.1-thingy91x-nrf53-net.hex