documentation update

Signed-off-by: sohams <sohams@nvidia.com>

Author: sohamm17

benchmarks/holoscan_flow_benchmarking/README.md

@@ -45,8 +45,7 @@ This script saves the original `cpp` files in a `*.cpp.bak` file.
 2. **Build the application**
 
 ```
-$ ./run build <application name> <other options> \
-    --configure-args -DCMAKE_CXX_FLAGS=-I$PWD/benchmarks/holoscan_flow_benchmarking
+$ ./run build <application name> <other options> --benchmark
 ```
 
 Please make sure to test that the application runs correctly after building it, and before going to

run

@@ -566,6 +566,8 @@ build_desc() {
   echo "                                          Default: build"
   echo "                                          Associated environment variable: CMAKE_BUILD_PATH"
   echo "   --benchmark                          : Build for Holoscan Flow Benchmarking."
+  echo "                                          Make sure the application is patched before"
+  echo "                                          building with this option."
   echo "   --configure-args <extra_args>        : Additional configuration arguments"
   echo "                                          multiple arguments can be passed between quotes"
   echo "                                          or using several --configure-args in the command line"