[system-administrators-guide] Fix incorrect prompt

[stephenw]

commit f5600a4db399fab9c2afb789d3c3eb6e51e6ab0d
Author: Stephen Wadeley <swadeley at redhat.com>
Date:   Sun Jan 25 09:33:42 2015 +0100

    Fix incorrect prompt

 en-US/Working_with_the_GRUB_2_Boot_Loader.xml |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/en-US/Working_with_the_GRUB_2_Boot_Loader.xml b/en-US/Working_with_the_GRUB_2_Boot_Loader.xml
index 7185dec..f6454b8 100644
--- a/en-US/Working_with_the_GRUB_2_Boot_Loader.xml
+++ b/en-US/Working_with_the_GRUB_2_Boot_Loader.xml
@@ -868,7 +868,8 @@ For more information on adding kernel options, see <xref linkend="sec-Editing_an
 				</para>
 				<para>
 					Change the file system's <systemitem class="username">root</systemitem> as follows:
-			<screen>sh-4.2#&nbsp;<command>chroot /sysroot</command></screen>
+			<screen>switch_root:/#&nbsp;<command>chroot /sysroot</command></screen>
+      The prompt changes to <computeroutput>sh-4.2#</computeroutput>.
 				</para>
 			</step>