admin/boot: small punctuation fixes: , & )

xml/bootconcept.xml

@@ -178,7 +178,7 @@
   </para>
 
   <para>
-   If you need to change hardware (for example hard disks) in an installed
+   If you need to change hardware (for example, hard disks) in an installed
    system and this hardware requires different drivers to be in the
    Kernel at boot time, you must update the
    <systemitem>initramfs</systemitem> file. This is done by calling
@@ -195,7 +195,7 @@
    Replace <replaceable>driver1</replaceable> with the module name of the
    driver. If you need to add more than one driver, list them
    space-separated (<literal><replaceable>driver1</replaceable>
-   <replaceable>driver2</replaceable></literal>.
+   <replaceable>driver2</replaceable></literal>).
   </para>
 
   <important>