Update README.md

Author: Daniel

README.md

@@ -145,7 +145,7 @@ If you get something like this after setting `--display` flag it might be relate
 ```bash
 No protocol specified
 ```
-Try running with the following command or use the provided `.sh` [script](https://github.com/danielTobon43/DBScan-PCL-Optimized/blob/master/scripts/run_dbscan.sh):
+Try running with the following command belowe or use the provided `.sh` [script](https://github.com/danielTobon43/DBScan-PCL-Optimized/blob/master/scripts/run_dbscan.sh):
 ```
 sudo -sE docker run --rm -it \
            --env="DISPLAY" \
@@ -156,6 +156,8 @@ sudo -sE docker run --rm -it \
            -t ghcr.io/danieltobon43/dbscan-octrees:latest --cloudfile /tmp/[YOUR PCD FILENAME] --display
 ```
 
+If this still does not work to display, run: `xhost +local:docker` and then run the option 1 command.
+
 **2. Option 2: shell script**
 
 - Create a `visualizer.sh` file with executable permissions (check this shell script [dbscan-shell-script](https://github.com/danielTobon43/DBScan-PCL-Optimized/blob/master/scripts/run_dbscan.sh)).