Minor fix in the documentation of vector bundles

Author: egourgoulhon

src/sage/manifolds/differentiable/vector_bundle.py

@@ -932,7 +932,8 @@ def trivialization(self, coordinates='', names=None, calc_method=None):
           - ``'SR'``: Sage's default symbolic engine (Symbolic Ring)
           - ``'sympy'``: SymPy
           - ``None``: the current calculus method defined on the manifold is
-            used (cf. :meth:`set_calculus_method`)
+            used (cf.
+            :meth:`~sage.manifolds.manifold.TopologicalManifold.set_calculus_method`)
 
         The coordinates declared in the string ``coordinates`` are
         separated by ``' '`` (whitespace) and each coordinate has at most four

src/sage/manifolds/section.py

@@ -1375,7 +1375,7 @@ def __setitem__(self, args, value):
 
         TESTS::
 
-            sage: M = Manifold(3, 'M', structure='top') # the 2-dimensional sphere S^3
+            sage: M = Manifold(3, 'M', structure='top') # the 3-dimensional sphere S^3
             sage: U = M.open_subset('U') # complement of the North pole
             sage: c_xyz.<x,y,z> = U.chart() # stereographic coordinates from the North pole
             sage: V = M.open_subset('V') # complement of the South pole