DOC typo in FastICA docs

Author: larsmans

sklearn/decomposition/fastica_.py

@@ -196,8 +196,8 @@ def my_g(x):
         If True, X_mean is returned too.
 
     compute_sources : bool, optional
-        If False, sources are not computes but only the rotation matrix. This
-        can save memory when working with big data. Defaults to True.
+        If False, sources are not computed, but only the rotation matrix.
+        This can save memory when working with big data. Defaults to True.
 
     Returns
     -------