doc updated and image fixed

Author: alirana01

docs/en/installation.rst

@@ -89,7 +89,9 @@ After installation of the EIM please follow the steps below:
 
 2. Open the Espressif-IDE if already running restart it.
 3. After the IDE detects the EIM executable and a valid older workspace, it will prompt you to convert the old workspace to the new format.
+
    .. image:: ../../media/ToolsManager/ESP-IDF_Manager_Convert_Old_Workspace.png
+
 4. Click on the ``Yes`` button to convert the old configuration. 
 5. Now in Espressif-IDE, go to ``Espressif > ESP-IDF Manager``.
    The ESP-IDF Manager editor will open, and you can proceed to select activate against the version you want.