message: Fix download links for Appveyor
diff: @@ -37,16 +37,12 @@ environment:
  matrix:
  - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu1604
  LLVM_VERSION: latest
  - LLVM_TAR: llvm-10.0.0-ubuntu16.04-Release+Asserts-x86.arm.wasm.tar.xz
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  LLVM_VERSION: latest
  - LLVM_TAR: llvm-10.0.0-win.vs2019-Release+Asserts-x86.arm.wasm.zip
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  LLVM_VERSION: 9.0
  - LLVM_TAR: llvm-9.0.1-win.vs2017-Release+Asserts-x86.arm.wasm.zip
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
  LLVM_VERSION: 8.0
  - LLVM_TAR: llvm-8.0.1-win.vs2017-Release+Asserts-x86.arm.wasm.zip
  for:
  -
  @@ -66,6 +62,9 @@ for:
  if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" ( (set generator="Visual Studio 15 Win64") & (set vsversion=2017))
  if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2019" ( (set generator="Visual Studio 16") & (set vsversion=2019))
  call "C:\Program Files (x86)\Microsoft Visual Studio\%vsversion%\Community\VC\Auxiliary\Build\vcvars64.bat"
  + set LLVM_TAR=llvm-10.0.0-win.vs2019-Release+Asserts-x86.arm.wasm.zip
  + if "%LLVM_VERSION%"=="9.0" (set LLVM_TAR=llvm-9.0.1-win.vs2017-Release+Asserts-x86.arm.wasm.zip)
  + if "%LLVM_VERSION%"=="8.0" (set LLVM_TAR=llvm-8.0.1-win.vs2017-Release+Asserts-x86.arm.wasm.zip)
  install:
  - cmd: |-
  cinst winflexbison3
  @@ -120,6 +119,7 @@ for:
  export CROSS_TOOLS=/usr/local/src/cross
  export MACOS_SDK=MacOSX10.13.sdk
  export WASM=OFF
  + export LLVM_TAR=llvm-10.0.0-ubuntu16.04-Release+Asserts-x86.arm.wasm.tar.xz
  install:
  - sh: |-
  sudo apt-get update
  