[instruction] Run gepetto-gui -c basic for exercise 1.

instructions/exercise-1.asciidoc

@@ -17,7 +17,7 @@ hppcorbaserver
 In the second terminal, type
 [source,sh]
 ----
-gepetto-gui
+gepetto-gui -c basic
 ----
 
 In the third terminal, type

instructions/exercise-1.html

@@ -763,7 +763,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-<pre><tt>gepetto-gui</tt></pre></div></div>
+<pre><tt>gepetto-gui -c basic</tt></pre></div></div>
 <div class="paragraph"><p>In the third terminal, type</p></div>
 <div class="listingblock">
 <div class="content"><!-- Generator: GNU source-highlight 3.1.8
@@ -952,7 +952,7 @@ http://www.gnu.org/software/src-highlite -->
 <div id="footer">
 <div id="footer-text">
 Last updated
- 2019-04-12 09:49:51 CEST
+ 2019-05-31 11:32:41 CEST
 </div>
 </div>
 </body>