I found several places where your links seem broken or out of date. There are many examples especially around TinyCLR OS, where you have added /software/ in your URLS but your links do not have it. Here are some examples, but I have seen them all over the place inglude GitHub TinyCLR repo.
[Start Coding Button] http://docs.ghielectronics.com/tinyclr/tutorials/intro.html
Correct link: http://docs.ghielectronics.com/**software/**tinyclr/tutorials/intro.html
[Supported Boards Button] http://docs.ghielectronics.com/tinyclr/boards/intro.html
Correct link: http://docs.ghielectronics.com/software/tinyclr/boards/intro.html
[Porting Documentation Button] http://docs.ghielectronics.com/tinyclr/porting/intro.html
Correct link: http://docs.ghielectronics.com/software/tinyclr/porting/intro.html
There are more but this should help to maybe identify the issue or have them updated…