doc/installation-makahiki-unix.rst: Removed unnecessary percent signs from "Setup environment variables."
doc/installation-makahiki-unix.rst: Removed unnecessary percent signs from "Setup environment variables."

yongwen/makahiki,csdl/makahiki,csdl/makahiki,yongwen/makahiki,yongwen/makahiki,yongwen/makahiki,csdl/makahiki,csdl/makahiki