Update dotnet-desktop.yml

Author: vertigra

.github/workflows/dotnet-desktop.yml

@@ -32,7 +32,7 @@ jobs:
       #  VERSION: ${{ github.ref_name }}
       run: | 
         echo "${{ env.VERSION }}"
-        echo "VERSION = "${{ github.ref_name }}".replace('v.', '')" >> $GITHUB_ENV
+        echo "VERSION = "${{ github.ref_name }}".replace('v.', '')" >> $env:GITHUB_ENV
         echo "${{ env.VERSION }}"
       #run: echo "VERSION=${TAG#v.#}" > $GITHUB_ENV