a node name was changed in manual.texi which resulted in a very large
ReadMe.txt file, as the generating script could not find the (renamed)
ending node. Fixed the ending node name in Docs/Makefile.am and the
Docs/Support/generate-text-files.pl Perl script to make sure this does
not happen again (I only discovered this because the Do-pkg script was
not able to add the ReadMe.txt to the Apple Disk image because it ran out
of disk space due to the size of the file)