fixed md syntax error

README.md

 # Collection of Bash code snippets, mostly one liners, to ease file handling among other things
 Collection of notes
-#### rename files to reverse order
+#### rename files to reverse order  
+
 ```N=1; ls -tr -1 *.jpg | tac | while read file; do mv "$file" "$N".jpg; N=$((N+1)); done```
-#### rotate all images using imagemagick
-```mogrify -rotate 180 *.jpg```  
-```mogrify``` overwrites existing images which is what makes it different from ```convert```
-#### cut poly-shape out of image, crop image to its boundaries, fill surrounding holes in certain color or transparent (for all jpgs in folder)
-```for f in ./*.jpg; do convert "$f" \( -clone 0 -fill black -colorize 100 -fill white -draw "polygon 3276,2421 4945,2407 4956,4708 3287,4722" \) -alpha off -compose copy_opacity -composite -trim +repage 41050648/"$f"_left.jpg; done```
-#### do something inside each folder of this folder
+#### rotate all images using imagemagick  
+
+```mogrify -rotate 180 *.jpg```    
+```mogrify``` overwrites existing images which is what makes it different from ```convert```  
+#### cut poly-shape out of image, crop image to its boundaries, fill surrounding holes in certain color or transparent (for all jpgs in folder)  
+
+```for f in ./*.jpg; do convert "$f" \( -clone 0 -fill black -colorize 100 -fill white -draw "polygon 3276,2421 4945,2407 4956,4708 3287,4722" \) -alpha off -compose copy_opacity -composite -trim +repage 41050648/"$f"_left.jpg; done```  
+#### do something inside each folder of this folder  
+
 ```
 for d in */; do  
   cd $d;