message: Fix function name in grpc_php_plugin.ps1
diff: @@ -7,7 +7,7 @@ Function Add-Msys2() {
  return $msys_location
  }
  -Function Add-Grpc_php_plugin() {
  +Function Add-GrpcPhpPlugin() {
  $msys_location = Add-Msys2
  $logs = . $msys_location\usr\bin\bash -l -c "pacman -S --noconfirm mingw-w64-x86_64-grpc" >$null 2>&1
  $grpc_version = Get-ToolVersion 'Write-Output' "$logs"
  