Merged in ahcorde/ign-gazebo/ahcorde/docs_debugging (pull request #504)

Improved visualization debugging docs

Approved-by: Louise Poubel <[email protected]>

tutorials/debugging.md

@@ -21,38 +21,28 @@ following two sections for instructions concerning each case.
 
 2. Launch `gdb`
 
-    ```
-    gdb ruby
-    ```
+    `gdb ruby`
 
 3. Run the Gazebo server with the desired arguments. Make sure to use the
    `-s` argument. The following example runs the `shapes.sdf` world.
 
-    ```
-    (gdb) r /usr/bin/ign gazebo -s shapes.sdf
-    ```
+    `(gdb) r /usr/bin/ign gazebo -s shapes.sdf`
 
 4. Use GDB as normal
 
 ### Debugging the GUI
 
 1. Launch `gdb`
 
-    ```
-    gdb ruby
-    ```
+    `gdb ruby`
 
 2. Run the Gazebo GUI with the desired arguments. Make sure to use the
    `-g` argument.
 
-    ```
-    (gdb) r /usr/bin/ign gazebo -g
-    ```
+    `(gdb) r /usr/bin/ign gazebo -g`
 
 3. In another terminal run the Gazebo server.
 
-    ```
-    ign gazebo -s -v 4 -r shapes.sdf
-    ```
+    `ign gazebo -s -v 4 -r shapes.sdf`
 
 4. Use GDB as normal.