Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index fac1a20..af1a17d 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -45,7 +45,7 @@
 	default y
 	---help---
 	  Enable this option if you want to decode Machine Check Exceptions
-	  occuring on your machine in human-readable form.
+	  occurring on your machine in human-readable form.
 
 	  You should definitely say Y here in case you want to decode MCEs
 	  which occur really early upon boot, before the module infrastructure