doc: update supported notes

Update the notes on the documentation start page and on the
samples/libraries overview pages to clarify the support for
nRF52 and nRF53 devices.

Signed-off-by: Ruth Fuchss <[email protected]>

Author: Ruth Fuchss

doc/nrf/index.rst

@@ -8,7 +8,7 @@ It offers a range of application samples and reference implementations, as well
 The |NCS| includes the Zephyr™ real-time operating system (RTOS), which is built for connected low power products.
 
 .. note::
-   The |NCS| contains references and code for Bluetooth Low Energy devices in the nRF52 Series, though product development on these devices is not currently supported with the |NCS|.
+   The |NCS| contains reference applications, sample source code, and libraries for developing low-power wireless applications with nRF52 and nRF53 Series devices, though support for these devices is incomplete and not recommended for production.
 
 Documentation for different versions of the |NCS| is available at the following links:
 

doc/nrf/shortcuts.txt

@@ -2,7 +2,7 @@
 
 .. |SES| replace:: SEGGER Embedded Studio
 
-.. |noBLE| replace:: Bluetooth Low Energy device implementations including libraries, drivers, samples, and applications are currently not supported for product development.
+.. |noBLE| replace:: Bluetooth Low Energy device implementations including libraries, drivers, samples, and applications are currently not recommended for production.
 
 .. |connect_terminal| replace:: Connect to the board with a terminal emulator (for example, PuTTY).
    See :ref:`putty` for the required settings.