board: esp32: update SPI RAM sample code documentation

to mention sample code support added for ESP32-S2.

Signed-off-by: Glauber Maroto Ferreira <[email protected]>

Author: Glauber Maroto Ferreira

samples/boards/esp32/spiram_test/README.rst

@@ -14,21 +14,38 @@ ESP_HEAP_MIN_EXTRAM_THRESHOLD, memory is allocated from internal DRAM. If
 size is greater than ESP_HEAP_MIN_EXTRAM_THRESHOLD, memory is allocated from
 SPIRAM.
 
+Supported SoCs
+**************
+
+The following SoCs are supported by this sample code so far:
+
+* ESP32
+* ESP32-S2
+
 Building and Running
 ********************
 
-Make sure you have the ESP32_WROVER_KIT connected over USB port.
+Make sure you have your board connected over USB port.
 
 .. code-block:: console
 
    west build -b esp32 samples/boards/esp32/spiram_test
-   west flash --esp-device /dev/ttyUSB0
+   west flash
+
+If using another supported Espressif board, replace the argument in the above
+command with a proper board name (e.g., `esp32s2_saola`).
 
 Sample Output
 =============
 
-To check output of this sample, any serial console program can be used (i.e. on Linux minicom, putty, screen, etc)
-This example uses ``picocom`` on the serial port ``/dev/ttyUS0``:
+To check output of this sample, run ``west espressif monitor`` or any other serial
+console program (e.g., minicom, putty, screen, etc).
+This example uses ``west espressif monitor``, which automatically detects the serial
+port at ``/dev/ttyUSB0``:
+
+.. code-block:: console
+
+   $ west espressif monitor
 
 .. code-block:: console