Replaces outdated screenshots for CL installation

- Retitles bare metal 'manual' for parallelism
- Retitles bare metal 'automatic' for parallelism

Signed-off-by: Michael Vincerra <michael.vincerra@intel.com>

source/clear-linux/get-started/bare-metal-install/bare-metal-install.rst

@@ -1,7 +1,7 @@
 .. _bare-metal-install:
 
-Install Clear Linux OS on bare metal
-####################################
+Install Clear Linux OS on bare metal - automatic
+################################################
 
 These instructions guide you through the installation of |CLOSIA|
 on bare metal using a bootable USB drive.

source/clear-linux/get-started/bare-metal-install/bare-metal-manual-install.rst

@@ -1,7 +1,7 @@
 .. _bare-metal-manual-install:
 
-Bare metal manual installation guide
-####################################
+Install Clear Linux OS on bare metal (manual)
+#############################################
 
 This section contains the steps for a |CL| manual installation.  It picks up
 where the :ref:`bare-metal-install` left off.