Fix some cases of "the the" split across two lines.
Kevin Grittner observed that
2186b608b3cb859fe0ec04015a5c4e4cbf69caed
introduced a new occurence of this by copying existing text, and I
found a few more cases using grep.
Discussion: http://postgr.es/m/CADAecHWfG-K+YvocHCkrXV-ycm+eUOaaUVfYZNOnwf0pSmuQCw@mail.gmail.com