Update README.md

Maxim Lobanov · Maxim Lobanov · commit b50d70502be6 · 2021-05-05T16:47:58.000+03:00
diff --git a/README.md b/README.md
@@ -34,6 +34,7 @@ Preview version:
 ```yml
 steps:
 - uses: actions@checkout@v2
+- uses: actions/setup-dotnet@v1
   with:
     dotnet-version: '6.0.x'
     include-prerelease: true
