Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/Documentation/watchdog/hpwdt.txt b/Documentation/watchdog/hpwdt.txt
index 9c24d5f..9488078 100644
--- a/Documentation/watchdog/hpwdt.txt
+++ b/Documentation/watchdog/hpwdt.txt
@@ -8,7 +8,7 @@
  The HP iLO2 NMI Watchdog driver is a kernel module that provides basic
  watchdog functionality and the added benefit of NMI sourcing. Both the
  watchdog functionality and the NMI sourcing capability need to be enabled
- by the user. Remember that the two modes are not dependant on one another.
+ by the user. Remember that the two modes are not dependent on one another.
  A user can have the NMI sourcing without the watchdog timer and vice-versa.
 
  Watchdog functionality is enabled like any other common watchdog driver. That