[FE training-materials-updates] Minor plural fixes

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=4faaa1bf6c4e0f1ed9b1521829cff8b1d0b50879

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commit 4faaa1bf6c4e0f1ed9b1521829cff8b1d0b50879
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Wed Oct 8 14:55:54 2014 +0200

    Minor plural fixes
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


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

4faaa1bf6c4e0f1ed9b1521829cff8b1d0b50879
 slides/kernel-input/kernel-input.tex                   | 4 ++--
 slides/sysdev-embedded-linux/sysdev-embedded-linux.tex | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/slides/kernel-input/kernel-input.tex b/slides/kernel-input/kernel-input.tex
index b7cb526..82da3dc 100644
--- a/slides/kernel-input/kernel-input.tex
+++ b/slides/kernel-input/kernel-input.tex
@@ -6,8 +6,8 @@
     from the human user.
   \item Initially written to support the USB {\em HID} (Human
     Interface Device) devices, it quickly grew up to handle all kind
-    of inputs (using USB or not): keyboard, mice, joystick,
-    touchscreen, etc.
+    of inputs (using USB or not): keyboards, mice, joysticks,
+    touchscreens, etc.
   \item The input subsystem is split in two parts:
     \begin{itemize}
     \item {\bf Device drivers}: they talk to the hardware (for example
diff --git a/slides/sysdev-embedded-linux/sysdev-embedded-linux.tex b/slides/sysdev-embedded-linux/sysdev-embedded-linux.tex
index 4ae7eff..46d3379 100644
--- a/slides/sysdev-embedded-linux/sysdev-embedded-linux.tex
+++ b/slides/sysdev-embedded-linux/sysdev-embedded-linux.tex
@@ -544,8 +544,8 @@ met:
     \item Windows and transparency
     \item Image loading and video display
     \end{itemize}
-  \item But also handles input event handling: mouse, keyboard, joystick,
-    touchscreen, etc.
+  \item But also handles input event handling: mice, keyboards,
+        joysticks, touchscreens, etc.
   \item Provides accelerated graphic operations on a few hardware
     platforms
   \item Single-application by default, but multiple applications can