[FE training-materials-updates] labs/buildroot-advanced-packages: fix typo

[Thomas Petazzoni]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=398f0e1df086e68d3660b4e890b0aa31918de56a

>---------------------------------------------------------------

commit 398f0e1df086e68d3660b4e890b0aa31918de56a
Author: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date:   Wed Nov 4 15:20:49 2015 +0100

    labs/buildroot-advanced-packages: fix typo
    
    Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>


>---------------------------------------------------------------

398f0e1df086e68d3660b4e890b0aa31918de56a
 labs/buildroot-advanced-packages/buildroot-advanced-packages.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/labs/buildroot-advanced-packages/buildroot-advanced-packages.tex b/labs/buildroot-advanced-packages/buildroot-advanced-packages.tex
index 0c115c0..df6c0e5 100644
--- a/labs/buildroot-advanced-packages/buildroot-advanced-packages.tex
+++ b/labs/buildroot-advanced-packages/buildroot-advanced-packages.tex
@@ -144,7 +144,7 @@ However, try to rebuild \code{bar} from scratch by doing \code{make
 bar-dirclean all}. The build problem happens again. This is because
 doing a change directly in \code{output/build/} might be good for
 doing a quick test, but not for a permanent solution: everything in
-\code{output/} deleted when doing a \code{make clean}. So instead of
+\code{output/} is deleted when doing a \code{make clean}. So instead of
 manually changing the package source code, we need to generate a
 proper patch for it.