Update documentation.yml

Remove extraneous `mkdir`.

Author: compnerd

.github/workflows/documentation.yml

@@ -61,7 +61,6 @@ jobs:
 
     - name: Generate Documentation
       run: |
-        New-Item -Path . -Name site -ItemType Directory
         swift doc generate Sources\SwiftWin32\CG --module-name CoreGraphics --output site\CoreGraphics --format html --base-url https://compnerd.github.io/swift-win32/CoreGraphics
         swift doc generate Sources\SwiftWin32 --module-name SwiftWin32 --output site\SwiftWin32 --format html --base-url https://compnerd.github.io/swift-win32/SwiftWin32
         swift doc generate Sources\SwiftWin32UI --module-name SwiftWin32UI --output site\SwiftWin32UI --format html --base-url https://compnerd.github.io/swift-win32/SwiftWin32UI