Typos

git-svn-id: svn://svn.savannah.gnu.org/texmacs/trunk@8801 64cb5145-927a-446d-8aed-2fb7b4773692
man-graphics 1/3 completed, any many error corrections

git-svn-id: svn://svn.savannah.gnu.org/texmacs/trunk@8802 64cb5145-927a-446d-8aed-2fb7b4773692