gh-actions: error on note in windows_check

Change-Id: Ib4d0a89443acfc6d03014f9d1c4c19fcca4bf931
diff --git a/.github/workflows/check-windows.yaml b/.github/workflows/check-windows.yaml
index 370ad93..add6c53 100644
--- a/.github/workflows/check-windows.yaml
+++ b/.github/workflows/check-windows.yaml
@@ -40,7 +40,7 @@
         run: Rscript -e "install.packages('remotes')" -e "remotes::install_deps(dependencies = TRUE)" -e "remotes::install_cran('rcmdcheck')" -e "install.packages('igraph')"
 
       - name: Check
-        run: Rscript -e "rcmdcheck::rcmdcheck(args = '${{ matrix.config.args }}', error_on = 'warning', check_dir = 'check')"
+        run: Rscript -e "rcmdcheck::rcmdcheck(args = '${{ matrix.config.args }}', error_on = 'note', check_dir = 'check')"
 
       - name: Upload check results
         if: failure()