feat(doc): use current year for copyright

documentation/src/conf.py

@@ -5,14 +5,15 @@
 
 import os
 import sys
+from datetime import datetime
 
 sys.path.append(os.path.abspath('../..'))
 
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
 project = 'boxes.py'
-project_copyright = '2023, Florian Festi'
+project_copyright = datetime.now().year.__str__() + ', Florian Festi'
 author = 'Florian Festi'
 
 # -- General configuration ---------------------------------------------------