Fix appveyor parsing issue

Author: Matt Mason

appveyor.yml

@@ -12,15 +12,18 @@ max_jobs: 1
 image: Visual Studio 2017
 clone_folder: c:\projects\azure-webjobs-sdk-script
 init:
-- ps: >-
-  $env:Path="c:\tools\php;c:\python35;C:\Program Files (x86)\Microsoft SDKs\F#\4.0\Framework\v4.0;"+$env:Path
+- ps: $env:Path = "c:\tools\php;c:\python35;C:\Program Files (x86)\Microsoft SDKs\F#\4.0\Framework\v4.0;" + $env:Path;
 install:
 - ps: >-
-  mkdir c:\tools\php | out-null
-  Invoke-WebRequest https://azfunc.blob.core.windows.net/public/php-7.1.3-Win32-VC14-x86.zip -OutFile c:\tools\php\php.zip
-  Add-Type -AssemblyName System.IO.Compression.FileSystem
-  [System.IO.Compression.ZipFile]::ExtractToDirectory("c:\tools\php\php.zip", "c:\tools\php")
-  Install-Product node 6.11.2 x86
+    mkdir c:\tools\php | out-null
+
+    Invoke-WebRequest https://azfunc.blob.core.windows.net/public/php-7.1.3-Win32-VC14-x86.zip -OutFile c:\tools\php\php.zip
+
+    Add-Type -AssemblyName System.IO.Compression.FileSystem
+
+    [System.IO.Compression.ZipFile]::ExtractToDirectory("c:\tools\php\php.zip", "c:\tools\php")
+
+    Install-Product node 6.11.2 x86
 build_script:
 - cmd: msbuild "WebJobs.Script.proj" /target:EnableSkipStrongNames;PackageScriptHost;PackageWebHost;TestBuild /verbosity:normal /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" /property:Buildnumber=%APPVEYOR_BUILD_NUMBER%;Configuration=Release
 test_script: