[BL training-materials-updates] slides: [used-for-yocto:] it's 2018, use https wherever possible

[Quentin Schulz]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=3a2bb84a111d2e9f909748fab3b25bf545d3c49a

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commit 3a2bb84a111d2e9f909748fab3b25bf545d3c49a
Author: Quentin Schulz <quentin.schulz at bootlin.com>
Date:   Sat Aug 18 17:30:15 2018 +0200

    slides: [used-for-yocto:] it's 2018, use https wherever possible
    
    Signed-off-by: Quentin Schulz <quentin.schulz at bootlin.com>


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

3a2bb84a111d2e9f909748fab3b25bf545d3c49a
 slides/about-us/about-us.tex                           | 6 +++---
 slides/beagleboneblack-board/beagleboneblack-board.tex | 2 +-
 slides/course-information/course-information.tex       | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/slides/about-us/about-us.tex b/slides/about-us/about-us.tex
index c621a9c..9deb22f 100644
--- a/slides/about-us/about-us.tex
+++ b/slides/about-us/about-us.tex
@@ -22,15 +22,15 @@
 \frametitle{Bootlin on-line resources}
   \begin{itemize}
     \item All our training materials and technical presentations:\\
-          \url{http://bootlin.com/docs/}
+          \url{https://bootlin.com/docs/}
     \item Technical blog:\\
-          \url{http://bootlin.com/blog/}
+          \url{https://bootlin.com/blog/}
     \item News and discussions (Google +):\\
 	  \url{https://plus.google.com/+Bootlin}
     \item News and discussions (LinkedIn):\\
 	  \url{https://www.linkedin.com/groups/4501089}
     \item Quick news (Twitter):\\
-          \url{http://twitter.com/bootlincom}
+          \url{https://twitter.com/bootlincom}
     \item Elixir - browse Linux kernel sources on-line:\\
           \url{https://elixir.bootlin.com}
   \end{itemize}
diff --git a/slides/beagleboneblack-board/beagleboneblack-board.tex b/slides/beagleboneblack-board/beagleboneblack-board.tex
index c767375..a3331b6 100644
--- a/slides/beagleboneblack-board/beagleboneblack-board.tex
+++ b/slides/beagleboneblack-board/beagleboneblack-board.tex
@@ -14,7 +14,7 @@
       \item 2 x 46 pins headers, with access to many expansion buses
         (I2C, SPI, UART and more)
       \item A huge number of expansion boards, called {\em capes}.
-        See \url{http://elinux.org/Beagleboard:BeagleBone_Capes}.
+        See \url{https://elinux.org/Beagleboard:BeagleBone_Capes}.
     \end{itemize}
     \column{0.35\textwidth}
     \begin{center}
diff --git a/slides/course-information/course-information.tex b/slides/course-information/course-information.tex
index 4f1b551..69c9fdc 100644
--- a/slides/course-information/course-information.tex
+++ b/slides/course-information/course-information.tex
@@ -79,7 +79,7 @@ It also helps to consolidate your knowledge.
        \code{Tab} key to complete command names and file paths.
        This avoids 95\% of typing mistakes.
        \item Get an electronic copy on
-       \url{http://bootlin.com/doc/legacy/command-line/command_memento.pdf}
+       \url{https://bootlin.com/doc/legacy/command-line/command_memento.pdf}
     \end{itemize}
     \column{0.4\textwidth}
     \includegraphics[width=\textwidth]{slides/course-information/command_memento.png}
@@ -97,7 +97,7 @@ It also helps to consolidate your knowledge.
       is very powerful and its main 15 commands are easy to
       learn and are sufficient for 99\% of everyone's needs!
       \item Get an electronic copy on
-      \url{http://bootlin.com/doc/legacy/command-line/vi_memento.pdf}
+      \url{https://bootlin.com/doc/legacy/command-line/vi_memento.pdf}
       \item You can also take the quick tutorial by running
       \code{vimtutor}. This is a worthy investment!
     \end{itemize}