Documentation: Fix driver-api typos

Documentation: Fix driver-api typos

Corrected a few spelling mistakes

functionalty ==> functionality
in Documentation/driver-api/cxl/devices/device-types.rst

adjascent ==> adjacent
in Documentation/driver-api/cxl/platform/example-configurations/one-dev-per-hb.rst

succeessful ==> successful
in Documentation/driver-api/thermal/exynos_thermal_emulation.rst

Signed-off-by: Ranganath V N <vnranganath.20@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250814184304.20448-1-vnranganath.20@gmail.com