updating readme.md

Author: aaqidmasoodi

README.md

@@ -105,9 +105,11 @@ Get OpenCV from homebrew:
   If you have already installed OpenCV via Homebrew, there is no need to configure any environment variables specifically for OpenCV on macOS. The OpenCV installation can be automatically detected if it was installed through Homebrew.
 
   To take advantage of this automatic detection, refrain from setting the following environment variables: 
+
   `OPENCV_LINK_LIBS`, `OPENCV_LINK_PATHS`, and `OPENCV_INCLUDE_PATHS`.
 
   However, make sure you have configured the following environment variables:
+  
   `DYLD_FALLBACK_LIBRARY_PATH`, `LDFLAGS` and `LD_LIBRARY_PATH`.
 
   If you have not made any custom changes to your installation, the following settings should work for your setup: