fix yml file

Change-Id: I2ce4fb5a15ea2fe23f45f5d98f1f4c40c3d8c138

Author: rdementi

.github/workflows/linux_make.yml

@@ -14,11 +14,11 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: cmake
-      run:
+      run: |
         rm -rf ${{ github.workspace }}/build
         cmake -B ${{ github.workspace }}/build -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}
     - name: make
-      run:
+      run: |
         cd ${{ github.workspace }}/build
         make install -j