docs: plot_transition_map should not use full_frontier parameter

Author: chilango74

okama/frontier/single_period.py

@@ -712,9 +712,7 @@ def plot_transition_map(self, cagr: bool = True, figsize: Optional[tuple] = None
         Transition Map with default setting show the relation between Return (CAGR) and assets weights for optimized portfolios.
         The same relation for Risk can be shown setting cagr=False.
 
-        >>> x.plot_transition_map(cagr=False,
-        ...                       full_frontier=True,  # to see the relation for the full Efficient Frontier
-        ...                       )
+        >>> x.plot_transition_map(cagr=False)
         >>> plt.show()
         """
         ef = self.ef_points