platform/x86: dell-ddv: Fix typo in documentation

Fix typo in word 'diagnostics' in documentation.
Signed-off-by: Anaswara T Rajan <anaswaratrajan@gmail.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241005070056.16326-1-anaswaratrajan@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

Documentation/wmi/devices/dell-wmi-ddv.rst

@@ -8,7 +8,7 @@ Introduction
 ============
 
 Many Dell notebooks made after ~2020 support a WMI-based interface for
-retrieving various system data like battery temperature, ePPID, diagostic data
+retrieving various system data like battery temperature, ePPID, diagnostic data
 and fan/thermal sensor data.
 
 This interface is likely used by the `Dell Data Vault` software on Windows,
@@ -277,7 +277,7 @@ Reverse-Engineering the DDV WMI interface
 4. Try to deduce the meaning of a certain WMI method by comparing the control
    flow with other ACPI methods (_BIX or _BIF for battery related methods
    for example).
-5. Use the built-in UEFI diagostics to view sensor types/values for fan/thermal
+5. Use the built-in UEFI diagnostics to view sensor types/values for fan/thermal
    related methods (sometimes overwriting static ACPI data fields can be used
    to test different sensor type values, since on some machines this data is
    not reinitialized upon a warm reset).