[www-scripts] Clang Attribute Doc Update: ERROR

[root via www-scripts]

UPDATING LLVM SOURCES
HEAD is now at 6a1d8b9 [RISCV] Custom type legalize i32 bswap/bitreverse to GREVIW on RV64 with Zbp extension
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   6a1d8b9..c964f30  master     -> origin/master
First, rewinding head to replay your work on top of it...
Fast-forwarded master to c964f308141578f24932c68a03af5fae7f876011.
/opt/tools/clangCLdoc_update.sh: line 44: cmake: command not found