[www-scripts] Clang Attribute Doc Update: ERROR

[root via www-scripts]

UPDATING LLVM SOURCES
HEAD is now at ec63dfe [LLD] Fix include following 45b8a741fbbf271e0fb71294cb7cdce3ad4b9bf3
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   ec63dfe..b4b8365  master     -> origin/master
First, rewinding head to replay your work on top of it...
Fast-forwarded master to b4b836563ae3603b601b57d8992f2d5fe60f02f8.
CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.13.4 or higher is required.  You are running version 3.7.1


-- Configuring incomplete, errors occurred!