IntelFrameworkModulePkg: Fix comments and improve E820 debug output

IntelFrameworkModulePkg: Fix comments and improve E820 debug output

Fix a few typos in LegacyBiosBuildE820, and improve the debug output of
the E820 table to pad with zeros instead of spaces, remove extra hyphens
and display the memory type in decimal.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Rebecca Cran <rebecca@bluestop.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>