IntelFsp2Pkg: Converted PatchFvUserManual from .docx to .md format

IntelFsp2Pkg: Converted PatchFvUserManual from .docx to .md format

Converted the the word format of the documentation into markdown format
for PatchFv.py

V2: updated the commit message descripton

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Satya Yarlagadda <satya.p.yarlagadda@intel.com>
Cc: Satya Yarlagadda <satya.p.yarlagadda@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>