Fix duplicated requiredItems in challenges tajmahal and greatpyramid

[marcbal]

Some block ids were duplicated after conversion of this file from pre1.13 to 1.13.

I used the informations that was in the file before the changes was made (old ids and comments) to deduce the proper item id : https://github.com/rlf/uSkyBlock/commit/3637195fd9cadd63040ee6da4f755ddd2033d7e1#diff-59b62696817efec79c5b22d696ade632L1178

[Muspah]

Tnx