[ogsa-wg] Minor edits on OGSA WSRF BP 1.0

Hi all, I've fixed minor editorial isses on OGSA WSRF BP 1.0 v020. (now it is v021). I don't touch security section (section 8) and appendix E, since Frank is now working on. https://forge.gridforum.org/projects/ogsa-wg/document/draft-ggf-ogsa-wsrf-ba... Thanks, -- Hiro Kishimoto