Merge pull request #79 from xatier/patch-1

Update Arch Linux kernel headers information

lkmpg.tex

@@ -176,7 +176,7 @@ apt-cache search linux-headers-`uname -r`
 
 On Arch Linux:
 \begin{codebash}
-sudo pacman -S linux-libre-headers
+sudo pacman -S linux-headers
 \end{codebash}
 
 This will tell you what kernel header files are available.