Documentation: fixed duplicated appendix reference

modules/contrib/doc/facerec/facerec_tutorial.rst

@@ -122,7 +122,7 @@ Then simply call create_csv.py with the path to the folder, just like this and y
     at/s17/3.pgm;1
     [...]
 
-Please see the :ref:`appendix` for additional informations.
+Please see the :ref:`appendixft` for additional informations.
 
 Eigenfaces
 ==========
@@ -516,7 +516,7 @@ Literature
 
 .. [Zhao03] Zhao, W., Chellappa, R., Phillips, P., and Rosenfeld, A. Face recognition: A literature survey. ACM Computing Surveys (CSUR) 35, 4 (2003), 399–458.
 
-.. _appendix:
+.. _appendixft:
 
 Appendix
 ========

modules/contrib/doc/facerec/tutorial/facerec_gender_classification.rst

@@ -66,7 +66,7 @@ All images for this example were chosen to have a frontal face perspective. They
 .. image:: ../img/tutorial/gender_classification/clooney_set.png
     :align: center
 
-You really don't want to create the CSV file by hand. And you really don't want scale, rotate & translate the images manually. I have prepared you two Python scripts ``create_csv.py`` and ``crop_face.py``, you can find them in the ``src`` folder coming with this documentation. You'll see how to use them in the :ref:`appendix`. 
+You really don't want to create the CSV file by hand. And you really don't want scale, rotate & translate the images manually. I have prepared you two Python scripts ``create_csv.py`` and ``crop_face.py``, you can find them in the ``src`` folder coming with this documentation. You'll see how to use them in the :ref:`appendixfgc`.
 
 Fisherfaces for Gender Classification
 --------------------------------------
@@ -140,7 +140,7 @@ And the Fisherfaces reconstruction:
 
 I hope this gives you an idea how to approach gender classification and the other image classification tasks.
 
-.. _appendix:
+.. _appendixfgc:
 
 Appendix
 --------