minor POD change to include WOFF along with TTC as things we can't output, and acknowledging we can't successfully compute DSIG.
minor POD change to include WOFF along with TTC as things we can't output, and acknowledging we can't successfully compute DSIG.

git-svn-id: f75843d1f2d20a890c1b7b8c44655b4ad9095f8f@1042 4dbf3599-f9e3-0310-9a96-835ab5cc0019

silnrsi/font-ttf,silnrsi/font-ttf