Fixed some typos, courtesy of codespell

Main change is the conversion from the British cancelling/-ed to the
American canceling/-ed.

src/libcharon/plugins/vici/libvici.h

@@ -58,7 +58,7 @@
  * - vici_end_list(): Close a previously opened list
  * - vici_add_list_item() / vici_add_list_itemf(): Add list item
  *
- * Once the request message is complete, it can be sent or cancelled with:
+ * Once the request message is complete, it can be sent or canceled with:
  *
  * - vici_submit()
  * - vici_free_req()

src/libcharon/plugins/vici/perl/Vici-Session/README.pod

@@ -640,7 +640,7 @@ print $res ? "ok\n" : "failed: $errmsg\n";
 # close vici socket
 close($socket);
 
-=head1 COPYRIGHT AND LICENCE
+=head1 COPYRIGHT AND LICENSE
 
 Copyright (c) 2015 Andreas Steffen