[www-scripts] Clang Attribute Doc Update: ERROR

[root via www-scripts]

UPDATING LLVM SOURCES
HEAD is now at 221c2b8 [BasicAA] Add more phi-phi tests (NFC)
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
Current branch master is up to date.
/opt/tools/clangCLdoc_update.sh: line 44: cmake: command not found