doc: fix README profiler GUI build instructions

Author: BenjaminAmos

README.md

@@ -8,7 +8,7 @@
 > _All commands need to be run in the `tracy-jni/tracy` subdirectory._
 - Create a new `build` folder under `tracy-jni/tracy/profiler`.
 - Configure the profiler using `cmake -B profiler/build -S profiler -DCMAKE_BUILD_TYPE=Release` (this only needs to be done once).
-- Build the profiler using `cmake --build profiler/build --parallel`.
+- Build the profiler using `cmake --build profiler/build --parallel --config Release`.
 - The built `tracy-profiler` executable can be found in the `profiler/build/Release` directory.
 
 ### Integration