Use 'share' for DATAROOTDIR (#879)

* Use 'share' for DATAROOTDIR

* fix table

Author: danimtb

reference/build_helpers/autotools.rst

@@ -211,7 +211,7 @@ Configures `Autotools` project with the given parameters.
     - ``--bindir``, ``--sbin`` and ``--libexec`` set to *bin* folder.
     - ``--libdir`` set to *lib* folder.
     - ``--includedir``, ``--oldincludedir`` set to *include* folder.
-    - ``--datarootdir`` set to *res* folder.
+    - ``--datarootdir`` set to *share* folder.
 
     These flags will be set on demand, so only the available options in the *./configure* are actually set. They can also be totally skipped
     using ``use_default_install_dirs=False`` as described in the section below.

reference/build_helpers/cmake.rst

@@ -181,7 +181,7 @@ There are some definitions set to be used later on the the ``install()`` step to
 +-----------------------------+---------------------------------------------+
 | CMAKE_INSTALL_OLDINCLUDEDIR | Set to *include* inside the package folder. |
 +-----------------------------+---------------------------------------------+
-| CMAKE_INSTALL_DATAROOTDIR   | Set to *res* inside the package folder.     |
+| CMAKE_INSTALL_DATAROOTDIR   | Set to *share* inside the package folder.   |
 +-----------------------------+---------------------------------------------+
 
 But you can change the automatic definitions after the ``CMake()`` object creation using the ``definitions`` property: