Update README.md

Co-authored-by: Sebastian Ehlert <[email protected]>

Author: jvdp1

README.md

@@ -73,9 +73,9 @@ These issues are due to the high number of procedures generated by the preproces
 They can be avoided by limiting the maximum rank of generated procedures, as follows with `CMake`:
 
 ```sh
-cmake -B build
+cmake -B build -DCMAKE_MAXIMUM_RANK=4
 
-cmake --build build -DCMAKE_MAXIMUM_RANK=4
+cmake --build build
 
 cmake --build build --target test
 ```