Fix trailing whitespace after PowerShell backtick line continuations

Lines 198 and 199 had trailing spaces after the backtick character,
which broke PowerShell line continuation for the Start-Process command
in the Spectre-mitigated MSVC libs installation step.

Author: cursoragent

.github/workflows/release.yml

@@ -195,8 +195,8 @@ jobs:
           $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
              $installPath = & $vswhere -products * -latest -property installationPath
              $setupExe = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\setup.exe"
-             Start-Process -FilePath $setupExe `   
-              -ArgumentList "modify", "--installPath", "`"$installPath`"", "--add", `               
+             Start-Process -FilePath $setupExe `
+              -ArgumentList "modify", "--installPath", "`"$installPath`"", "--add", `
               "Microsoft.VisualStudio.Component.VC.Tools.x86.x64.Spectre", "--quiet", "--norestart" `
               -Wait -PassThru -NoNewWindow