Update web server install tutorial screenshots

The first two screenshots in the web server install tutorial
don't correspond to the default configuration in the latest
version of the Apache and PHP servers (as tested on
VERSION_ID=20490).

This commit updates both screenshots and the text that refers
to them in the document.

Signed-off-by: Jair Gonzalez <jair.de.jesus.gonzalez.plascencia@intel.com>

source/clear-linux/tutorials/web-server-install/web-server-install.rst

@@ -61,11 +61,11 @@ To start the Apache service, enter the following commands:
 To verify that the Apache server application is running, go to your web
 browser and navigate to: http://localhost
 
-If the service is running you will see the message “It works!” on your
-browser as shown in figure 1.
+If the service is running you will see the message "This web server is
+operational from host." on your browser as shown in figure 1.
 
 .. figure:: figures/web-server-install-1.png
-    :alt: It works!
+    :alt: This web server is operational from host.
     :scale: 50%
 
     Confirmation the Apache service is running.
@@ -129,7 +129,8 @@ Finally, let’s create the new ``DocumentRoot`` directory structure and copy th
 
 To make sure that we have everything set correctly, let’s edit the new
 :file:`index.html` file with your editor and change the text from
-``It works`` to ``It works in it’s new location``.
+"This web server is operational from host." to
+"This web server is operational from its new location.".
 
 With the new configuration files in place, you will need to stop and then
 restart the ``httpd.service``.