typo

Author: Nathan Cassereau

ot/optim.py

@@ -45,7 +45,7 @@ def line_search_armijo(
     c1 : float, optional
         :math:`c_1` const in armijo rule (>0)
     alpha0 : float, optional
-        initial step (>0),
+        initial step (>0)
     alpha_min : float, optional
         minimum value for alpha
     alpha_max : float, optional