Fix table display issue in README.rst

Fix an table display issue in README.rst that was introduced in commit 4182342.

Author: Isoheptane

README.rst

@@ -122,11 +122,11 @@ Supported CPUs
 | Dialog       | DA1469x                     | ✔      | ✖    | ✖         | da146xx                |                   |
 +--------------+-----------------------------+--------+------+-----------+------------------------+-------------------+
 | Espressif    | S2, S3                      | ✔      | ✔    | ✖         | dwc2 or esp32sx        |                   |
-|   ESP32      +-----------------------------+--------+------+-----------+------------------------+-------------------+
+| ESP32        +-----------------------------+--------+------+-----------+------------------------+-------------------+
 |              | P4                          | ✔      | ✔    | ✔         | dwc2                   |                   |
-               +-----------------------------+--------+------+-----------+------------------------+-------------------+
+|              +-----------------------------+--------+------+-----------+------------------------+-------------------+
 |              | H4                          | ✔      | ✔    | ✖         | dwc2                   |                   |
-+--------------+----+------------------------+--------+------+-----------+------------------------+-------------------+
++--------------+-----------------------------+--------+------+-----------+------------------------+-------------------+
 | GigaDevice   | GD32VF103                   | ✔      |      | ✖         | dwc2                   |                   |
 +--------------+-----------------------------+--------+------+-----------+------------------------+-------------------+
 | Infineon     | XMC4500                     | ✔      | ✔    | ✖         | dwc2                   |                   |