ensure the executable is named correctly in the build script

build.sh

@@ -4,7 +4,7 @@ CACHE=/tmp/fggl/
 LOG=$CACHE/demo.log
 
 BUILD_PATH="builds/cli"
-DEMO_EXE="$PWD/$BUILD_PATH/demo/FgglDemo"
+DEMO_EXE="$PWD/$BUILD_PATH/demo/demo"
 
 # check cmake exists
 if [ ! -x "$(command -v cmake)" ]; then