fix to documentation merge

docs/conf.py

@@ -57,7 +57,10 @@ author = "Nidhal Baccouri"
 # the built documents.
 #
 # The short X.Y version.
-version = '1.5.1-pre1'
+import toml
+with open("pyproject.toml", "r") as f:
+    tom = toml.load(f)
+version = tom['tool']['poetry']['version']
 # The full version, including alpha/beta/rc tags.
 # release = deep_translator.__version__