correct slash for windows

Author: ignatandrei

.github/workflows/dotnetTools.yml

@@ -82,4 +82,4 @@ jobs:
 
     - name: push to nuget
       run: |
-        dotnet nuget push ${{github.workspace}}/src/NetCore2Blockly/NetCore2BlocklyNew/netcoreb/*symb*.*pkg --api-key  ${{ secrets.NUGETAPIKEY }} --source https://api.nuget.org/v3/index.json
+        dotnet nuget push ${{github.workspace}}\src\NetCore2Blockly\NetCore2BlocklyNew\netcoreb\*symb*.*pkg --api-key  ${{ secrets.NUGETAPIKEY }} --source https://api.nuget.org/v3/index.json