Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index b4665b9..7c4b514d 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -797,7 +797,7 @@
 	perform some initialization. After that, your hardware
 	starts working and will generate an interrupt as soon
 	as it's finished, has some data available, or needs your
-	attention because an error occured.
+	attention because an error occurred.
 	</para>
 	<para>
 	<filename>/dev/uioX</filename> is a read-only file. A