esp32: doc: pinctrl: fixes URL typo
esp32: doc: pinctrl: fixes URL typo

Fixes URL typo and other minor typos.

Signed-off-by: Glauber Maroto Ferreira <dedf8e032f416c6160988666098d376154426ed6@espressif.com>

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