Update Readme.md

Readme.md

-Author Piet Jarmatz
-November 2023
+Author: Piet Jarmatz
+
+Date: November 2023
 
 # What is this?
 A Piet program that looks like the art piece "Get-Together" by Barbara Maahs.
 
+# Useful links
 Piet language specification:
 https://www.dangermouse.net/esoteric/piet.html
+
 npiet Piet interpreter:
 https://www.bertnase.de/npiet/
 
 # Files
-- clean.jpg: Photography of original artwork
-- get-together.ppm: Source code (raw version, for development). Can be edited with `npietedit get-together.ppm`
-- get-together.png: Source code (nice version, to show) Codelsize is 32. "ub" option (= interpret unknown colors as black) must be set.
-- npiet-trace.png: Debug trace from npiet
+- `clean.jpg`: Photography of original artwork
+- `get-together.ppm`: Source code, raw version, for development. Can be edited with `npietedit`
+- `get-together.png`: Source code, nice version. Codelsize is 32 pixel. "ub" option (= interpret unknown colors as black) must be set.
+- `npiet-trace.png`: Debug trace from npiet
 
 # How to execute:
 `npiet -ub get-together.png`