[Docs] Update docs version to use version.txt.

docs/source/conf.py

@@ -14,6 +14,7 @@
 #
 import os
 import sys
+import pathlib
 sys.path.insert(0, os.path.abspath('../python'))
 
 
@@ -23,8 +24,12 @@ project = u'Eclipse Aidge'
 copyright = u'2023, CEA LIST'
 author = u'CEA LIST'
 
+
+aidge_root = pathlib.Path().absolute()
+version_file = open(aidge_root / "../../version.txt", "r").read().strip()
+
 # The short X.Y version
-version = u'0.1' # TODO : use version file (to setup later ...)
+version = version_file
 # The full version, including alpha/beta/rc tags
 release = u''
 # Name variable to use in the project