drivers: display: Fix typo in Kconfig.ssd1306
drivers: display: Fix typo in Kconfig.ssd1306

Model descriptions in Kconfig.ssd1306 should be ssd1306 instead of
ssd16xx, these may be copied from driver for ssd16xx.

Signed-off-by: Huang Qi <a0e5afff774d44f04ab4b4a3361befa3606ff04d@qq.com>

galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr