last operating system -> os

Author: Anton-4

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
         if: startsWith(matrix.os, 'ubuntu-')
         run: |
           sudo apt-get install -y musl-tools
-          if [[ "${{ matrix.operating-system }}" == *"-arm" ]]; then
+          if [[ "${{ matrix.os }}" == *"-arm" ]]; then
             # TODO re-enable once TODO below is done: rustup target add aarch64-unknown-linux-musl
             echo "no-op"
           else
@@ -78,7 +78,7 @@ jobs:
         env:
           ROC: ./roc_nightly/roc
         run: |
-          if [[ "${{ matrix.operating-system }}" == *"-arm" ]]; then
+          if [[ "${{ matrix.os}}" == *"-arm" ]]; then
             # TODO debug this: CARGO_BUILD_TARGET=aarch64-unknown-linux-musl $ROC build.roc
             echo "no-op"
           else