Update R-CMD-check.yaml

Author: tanho63

.github/workflows/R-CMD-check.yaml

@@ -12,6 +12,7 @@ name: R-CMD-check
 jobs:
   R-CMD-check:
     runs-on: ${{ matrix.config.os }}
+    if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     name: ${{ matrix.config.os }} (${{ matrix.config.r }})