"The Yocto Project uses an an autobuilder, which provides continuous build and integration tests." in here: http://www.yoctoproject.org/docs/1.4/ref-manual/ref-manual.html Note the double "an".
There is another typo of double "the": "The the main difference between GNOME Mobile and standard GNOME is that desktop-orientated libraries have been removed"
Laszlo, Thanks for finding and reporting these. I have fixed and pushed these to the master branch. You can see latest version in http://www.yoctoproject.org/docs/1.5/ref-manual/ref-manual.html. Scott