Added all *.cpp samples reference to the 2.4.6 documentation as discussed in feature #3169

- Used lunix style slashes - works on most systems
- Removed all trailing whitespaces

modules/legacy/doc/expectation_maximization.rst

@@ -5,6 +5,10 @@ This section describes obsolete ``C`` interface of EM algorithm. Details of the
 
 .. highlight:: cpp
 
+.. Sample code::
+
+   * : An example on using the Expectation Maximalization algorithm can be found at opencv_source_code/samples/cpp/em.cpp
+
 
 CvEMParams
 ----------

modules/legacy/doc/feature_detection_and_description.rst

@@ -99,7 +99,9 @@ Trains a randomized tree using an input set of keypoints.
 
     :param num_quant_bits: Number of bits used for quantization.
 
+.. Sample code::
 
+   * : An example on training a Random Tree Classifier for letter recognition can be found at opencv_source_code\samples\cpp\letter_recog.cpp
 
 RandomizedTree::read
 ------------------------