Fixed typo in CI

Author: S-Dafarra

.github/workflows/ci.yml

@@ -60,7 +60,7 @@ jobs:
         cmake --build . --target install
 
     - name: Install icub-contrib from source [Windows]
-      if: matrix.os == 'ubuntu-latest' || matrix.os == 'macOS-latest'
+      if: matrix.os == 'windows-latest'
       shell: bash -l {0}
       run: |
         git clone https://github.com/robotology/icub-contrib-common