Update cmake-multi-platform.yml

Author: agruzdev

.github/workflows/cmake-multi-platform.yml

@@ -60,7 +60,7 @@ jobs:
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
         -S ${{ github.workspace }}
         -DFREEIMAGE_WITH_LIBHEIF:BOOL=OFF
-        -FREEIMAGE_BUILD_TESTS:BOOL=ON
+        -DFREEIMAGE_BUILD_TESTS:BOOL=ON
 
     - name: Build
       # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).