Edit README.md

README.md

@@ -164,7 +164,7 @@ curl -L -o occ83.tgz "https://github.com/Open-Cascade-SAS/OCCT/archive/refs/tags
   ```bash
   cd OCCT-7_8_0 && mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release -DBUILD_MODULE_Draw=0 -DBUILD_MODULE_Visualization=0 -DBUILD_MODULE_ApplicationFramework=0 -DINSTALL_DIR=$HOME/local/occt && make -j8 && make install
   ```
-  4. Add ```LD_LIBRARY_PATH=$HOME/local/occt/lib/:$LD_LIBRARY_PATH``` and ```export CASROOT=$HOME/local/occt``` in your .bashrc 
+  4. Add ```export LD_LIBRARY_PATH=$HOME/local/occt/lib/:$LD_LIBRARY_PATH``` and ```export CASROOT=$HOME/local/occt``` in your .bashrc 
 
 ## 3. Install Torch (Optional)