suppressing semi-colon at the end of dot files

Hello,
When I try to generate manual on debian jessie with the shell command : 
$ make manual

It complain about last semi-colon in .dot files.

Here a patch to delete semi-colons in all .dot files.

But it's not enough, I can't make manual. I've got another tex bug : 
```bash
[...]
) [85] [86]) (./PRESENTATION_ExAdv.tex [87] [88]

! Package keyval Error: bg undefined.

See the keyval package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.25 \end{frame}
                
!  ==> Fatal error occurred, no output PDF file produced!
Transcript written on presentation.log.
Makefile:294: recipe for target 'manual' failed
make: *** [manual] Error 1
```

I'm searching for solution.

Regards.