doc/releases: release-notes-3.0: fix typos
doc/releases: release-notes-3.0: fix typos

Fix some typos in the release note additions.

Signed-off-by: Dan Kalowsky <9431e108b67d1efa9df54e6351da1951bcd9be32@deadmime.org>

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