move the comment

Author: vladak

README.md

@@ -6,12 +6,12 @@ Physics, Charles University in Prague.
 
 To get the PDFs, go to [Releases](https://github.com/devnull-cz/unix-linux-prog-in-c/releases).
 
-It is written in LaTeX.  See the `Makefile` on how to build the PDF document.
-
 The class home page is https://devnull-cz.github.io/unix-linux-prog-in-c/
 
 # Developer notes
 
+It is written in LaTeX.  See the `Makefile` on how to build the PDF document.
+
 ## Trigger new release
 
 ```