change formatting

input examples are now given as

```bash
input $ARG1
```

While outputs use md's '> ' sign as a quote.

vision/imagemagick.md

@@ -6,48 +6,68 @@ tags: [ "Documentation", "Vision" ]
 
 Convert jpg to png.
 
-> convert image.jpg image.png
+```bash
+convert image.jpg image.png
+```
 
-> convert image.jpg -quality 50 image.jpg
+```bash
+convert image.jpg -quality 50 image.jpg
+```
 
 'Quality' must be from 1 to 100.
 
-> convert -resize 50% image.jpg image2.jpg
+```bash
+convert -resize 50% image.jpg image2.jpg
+```
 
 Resizing only changes jpegs.  Change a png with:
 
-> convert input.png png8:out.png
+```bash
+convert input.png png8:out.png
+```
 
 # Invert Colours
 
-> convert input.jpg output.jpg -negate
+```bash
+convert input.jpg output.jpg -negate
+```
 
 # Make Images Smaller
 
-> convert image.jpg -resize 25% output.jpg
+```bash
+convert image.jpg -resize 25% output.jpg
+```
 
 
 # Trim images to border
 
 This is generally used for transparrent images.
 
-> convert -trim image.png output.png
+```bash
+convert -trim image.png output.png
+```
 
 Make the white of an image transparrent.
 
-> convert -transparent white -fuzz 10% input.png output.png
+```bash
+convert -transparent white -fuzz 10% input.png output.png
+```
 
 The 'fuzz' option tells the computer that 'close to white' is fine.  You might want to use 20% or higher fuzz.
 
 
 ## Dropshadow
 
-> `convert <input file> \( +clone -background black -shadow 50x8+0+5 \) +swap -background none -layers merge +repage <output file>`
+```bash
+`convert <input file> \( +clone -background black -shadow 50x8+0+5 \) +swap -background none -layers merge +repage <output file>`
+```
 
 
 # Convert every jpg in directory to png
 
-> mogrify -format png *.jpg
+```bash
+mogrify -format png *.jpg
+```
 
 # Printing Words
 
@@ -77,14 +97,20 @@ $potrace -s output.ppm -o svgout.svg
 
 See your installed fonts:
 
-> convert -list font
+```bash
+convert -list font
+```
 
 Make na image showing day of the week:
 
-> convert -fill blue -font Sauce-Code-Pro-Semibold-Nerd-Font-Complete-Mono -gravity center -pointsize 79 label:$(date +%A) day.png
+```bash
+convert -fill blue -font Sauce-Code-Pro-Semibold-Nerd-Font-Complete-Mono -gravity center -pointsize 79 label:$(date +%A) day.png
+```
 
 
 Make a meme:
 
-> convert inputmemeimage.png -font impact -fill white -pointsize 84 -stroke black -strokewidth 3 -gravity north -annotate +0+20 'TOP MEME TEXT' -gravity south -annotate +0+20 'BOTTOM MEME TEXT' outputmemeimage.png
+```bash
+convert inputmemeimage.png -font impact -fill white -pointsize 84 -stroke black -strokewidth 3 -gravity north -annotate +0+20 'TOP MEME TEXT' -gravity south -annotate +0+20 'BOTTOM MEME TEXT' outputmemeimage.png
+```