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/usb.tmpl b/Documentation/DocBook/usb.tmpl
index af29360..8d57c18 100644
--- a/Documentation/DocBook/usb.tmpl
+++ b/Documentation/DocBook/usb.tmpl
@@ -690,7 +690,7 @@
 		    </para><para>
 		    This request lets kernel drivers talk to user mode code
 		    through filesystem operations even when they don't create
-		    a charactor or block special device.
+		    a character or block special device.
 		    It's also been used to do things like ask devices what
 		    device special file should be used.
 		    Two pre-defined ioctls are used