fix many internal links

Fixed a number of internal links that need to
go to the GitHub site.

Ran `make www` to perform the above.

2006/sykes1/README.md

@@ -4,7 +4,7 @@
     make
 ```
 
-There is an alt version based on the author's remarks. The [try.sh](try.sh)
+There is an alt version based on the author's remarks. The [try.sh](%%REPO_URL%%/2006/sykes1/try.sh)
 script will compile and use both but if you wish to see the alternate version
 specifically see the [Alternate code](#alternate-code) section below.
 
@@ -127,7 +127,7 @@ Some instructions on how to make your own cube are in the included file
 [bedlam-cubes.pdf](%%REPO_URL%%/2006/sykes1/bedlam-cubes.pdf).
 
 Finally, you can watch it being solved with the video file here,
-[solving-bedlam-cube.mp4](solving-bedlam-cube.mp4).
+[solving-bedlam-cube.mp4](%%REPO_URL%%/2006/sykes1/solving-bedlam-cube.mp4).
 
 Actually the cube is very hard to do by hand by just trying to fit it
 together.  I have not known anyone to solve it in this way - you would