Fix tolerance in doctest

Author: rtavenar

ot/bregman.py

@@ -1558,8 +1558,8 @@ def empirical_sinkhorn_divergence(X_s, X_t, reg, a=None, b=None, metric='sqeucli
     >>> reg = 0.1
     >>> X_s = np.reshape(np.arange(n_s), (n_s, 1))
     >>> X_t = np.reshape(np.arange(0, n_t), (n_t, 1))
-    >>> empirical_sinkhorn_divergence(X_s, X_t, reg)
-    array([1.49988718])
+    >>> empirical_sinkhorn_divergence(X_s, X_t, reg)  # doctest: +ELLIPSIS
+    array([1.499...])
 
 
     References