configure/CMakeLists.txt: Avoid cmake warning with 3.24.1
CMake Warning (dev) at configure/CMakeLists.txt:151: Syntax Warning in cmake code at column 53 Argument not separated from preceding token by whitespace. Call Stack (most recent call first): CMakeLists.txt:76 (include)
CMake Warning (dev) at configure/CMakeLists.txt:174: Syntax Warning in cmake code at column 53 Argument not separated from preceding token by whitespace. Call Stack (most recent call first): CMakeLists.txt:76 (include)
This warning is for project developers. Use -Wno-dev to suppress it.
Close #974 (closed).