Added links to CHM docs and updated info.

[EdgarReynaldo]

Now that I have the CHM doc build process down for allegro 4 and 5 I wanted to make my CHM manuals available for download. The links go to bitbucket however, on my download page. I'm guessing you want me to upload the files somewhere else but I don't know where that is.

[SiegeLord]

Thanks! If you could, could you upload them to the https://github.com/liballeg/liballeg.github.io repository? Typically we place documentation artifacts next to the rest of the documentation, which would be https://github.com/liballeg/liballeg.github.io/tree/master/a5docs/5.2.4 and maybe https://github.com/liballeg/liballeg.github.io/tree/master/stabledocs/en for Allegro 4.