py_tutorials: add print() braces for python3

doc/py_tutorials/py_setup/py_setup_in_fedora/py_setup_in_fedora.markdown

@@ -30,7 +30,7 @@ $ yum install numpy opencv*
 Open Python IDLE (or IPython) and type following codes in Python terminal.
 @code{.py}
 >>> import cv2
->>> print cv2.__version__
+>>> print( cv2.__version__ )
 @endcode
 If the results are printed out without any errors, congratulations !!! You have installed
 OpenCV-Python successfully.
@@ -218,7 +218,7 @@ Installation is over. All files are installed in /usr/local/ folder. But to use
 should be able to find OpenCV module. You have two options for that.
 
 -#  **Move the module to any folder in Python Path** : Python path can be found out by entering
-    import sys;print sys.path in Python terminal. It will print out many locations. Move
+    `import sys; print(sys.path)` in Python terminal. It will print out many locations. Move
     /usr/local/lib/python2.7/site-packages/cv2.so to any of this folder. For example,
     @code{.sh}
     su mv /usr/local/lib/python2.7/site-packages/cv2.so /usr/lib/python2.7/site-packages

doc/py_tutorials/py_setup/py_setup_in_windows/py_setup_in_windows.markdown

@@ -36,7 +36,7 @@ Installing OpenCV from prebuilt binaries
 -#  Open Python IDLE and type following codes in Python terminal.
     @code
         >>> import cv2
-        >>> print cv2.__version__
+        >>> print( cv2.__version__ )
     @endcode
 
 If the results are printed out without any errors, congratulations !!! You have installed