doc: fix data description comments in plot scripts

doc/plot/plot_MAP.py

@@ -14,7 +14,7 @@ versicolor = data[iris_data.target == 1]
 virginica = data[iris_data.target == 2]
 
 
-# Two clusters with
+# 3 clusters with a feature dimensionality of 2
 mle_machine = bob.learn.em.GMMMachine(3)
 # Creating some fake means for the example
 mle_machine.means = np.array([[5, 3], [4, 2], [7, 3.0]])

doc/plot/plot_ML.py

@@ -18,7 +18,7 @@ setosa = data[iris_data.target == 0]
 versicolor = data[iris_data.target == 1]
 virginica = data[iris_data.target == 2]
 
-# Two clusters with a feature dimensionality of 3
+# 3 clusters with a feature dimensionality of 2
 machine = GMMMachine(
     3,
     convergence_threshold=1e-5,