man page: changed grub.conf to grub2.cfg

(cherry picked from commit 77c0b30)

dracut.usage.asc

@@ -99,10 +99,6 @@ raid with encryption and LVM on top), as long as you specify the correct
 filesystem LABEL or UUID on the kernel command line for your root device, dracut
 will find it and boot from it.
 
-The kernel command line usually can be configured in _/boot/grub/grub.conf_ or
-_/boot/grub2/grub.cfg_, if grub is your bootloader and it also can be edited in
-the real boot process in the grub menu.
-
 The kernel command line can also be provided by the dhcp server with the
 root-path option. See <<NetworkBoot>>.
 
@@ -310,7 +306,7 @@ stick and mount that. Then you can store the output for later inspection.
 In all cases, the following should be mentioned and attached to your bug report:
 
 * The exact kernel command-line used. Typically from the bootloader
-configuration file (e.g. _/etc/grub.conf_) or from _/proc/cmdline_.
+configuration file (e.g. _/boot/grub2/grub.cfg_) or from _/proc/cmdline_.
 * A copy of your disk partition information from _/etc/fstab_, which might be
 obtained booting an old working initramfs or a rescue medium.
 * Turn on dracut debugging (see _the 'debugging dracut' section_), and attach
@@ -345,22 +341,22 @@ logging during the system boot.  This section documents configuring a
 serial console connection to record boot messages.
 
 . First, enable serial console output for both the kernel and the bootloader.
-. Open the file _/etc/grub.conf_ for editing. Below the line ''timeout=5'', add
+. Open the file _/boot/grub2/grub.cfg_ for editing. Below the line ''timeout=5'', add
 the following:
 +
 ----
 serial --unit=0 --speed=9600
 terminal --timeout=5 serial console
 ----
 +
-. Also in _/etc/grub.conf_, add the following boot arguemnts to the ''kernel''
+. Also in _/boot/grub2/grub.cfg_, add the following boot arguemnts to the ''kernel''
 line:
 +
 ----
 console=tty0 console=ttyS0,9600
 ----
 +
-. When finished, the _/etc/grub.conf_ file should look similar to the example
+. When finished, the _/boot/grub2/grub.cfg_ file should look similar to the example
 below.
 +
 ----
@@ -395,10 +391,10 @@ dracut offers a shell for interactive debugging in the event dracut fails to
 locate your root filesystem. To enable the shell:
 
 . Add the boot parameter ''rd.shell'' to your bootloader configuration file
-(e.g. _/etc/grub.conf_)
+(e.g. _/boot/grub2/grub.cfg_)
 . Remove the boot arguments ''rhgb'' and ''quiet''
 +
-A sample _/etc/grub.conf_ bootloader configuration file is listed below.
+A sample _/boot/grub2/grub.cfg_ bootloader configuration file is listed below.
 +
 ----
 default=0