Another PDF fix!

Hey,

I'm not sure if I just have a finicky computer, or if everyone else was having issues with PDF builds.

I tracked down some pesky errors:

1. The `ģ` in `Uģis Ozols` was bombing the build. I changed it to just a regular, ol' `Ugis` to fix it.  Sorry @ugisozols :(
2. There was a heading: `**$el and $()**` that was being stripped and output as: `elandpar`. I'm not an expert at this character encoding, and multi-translation build steps stuff. But, I at least was able to recognize `**$` didn't register as a heading, and threw the compiler off. I wasn't sure of a good fix, so I changed it to: `**el and $()**`, allowing the text that follows to explain.

I also removed a file, `/INSTRUCTIONS-pandoc-ebooks.md`, since I believe this step is covered in the Makefile.  

I'm not sure if you'll want to merge these in, considering the changes I had to make. But, if you think it's a fair trade-off, I'm happy to have helped! I'm also happy to be the un-official "build guy." Since the effort involved to resolve the various build dependencies and run it is much more intimidating than contributing text, I can gladly keep an eye on the repo to see if a build needs to be done!