fixup! Fix building umfd.dll on single-config generators

Author: PatKamin

.github/workflows/nightly.yml

@@ -67,7 +67,7 @@ jobs:
       run: >
         cmake
         -B ${{env.BUILD_DIR}}
-        -DCMAKE_PREFIX_PATH="${{env.VCPKG_PATH}}"
+        -DCMAKE_PREFIX_PATH=${{env.VCPKG_PATH}}
         -DCMAKE_C_COMPILER=${{matrix.compiler.c}}
         -DCMAKE_CXX_COMPILER=${{matrix.compiler.cxx}}
         -G "${{matrix.generator}}"