Typo in prereq_command (#909)

There are two " in the prereq_command in T1035 leading to an error when running the CheckPrereqs flag.

atomics/T1035/T1035.yaml

@@ -50,7 +50,7 @@ atomic_tests:
     - description: |
         PsExec tool from Sysinternals must exist on disk at specified location (#{psexec_exe})
       prereq_command: |
-        if (Test-Path "#{psexec_exe}"") { exit 0} else { exit 1}
+        if (Test-Path "#{psexec_exe}") { exit 0} else { exit 1}
       get_prereq_command: |
         Invoke-WebRequest "https://download.sysinternals.com/files/PSTools.zip" -OutFile "$env:TEMP\PsTools.zip"
         Expand-Archive $env:TEMP\PsTools.zip $env:TEMP\PsTools -Force