HOTFIX: Clarify MSBuild helper attributes (#2698)

reference/tools/microsoft/msbuild.rst

@@ -26,19 +26,44 @@ The ``MSBuild.build()`` method internally implements a call to ``msbuild`` like:
 
 .. code:: bash
 
-    $ <vcvars-cmd> && msbuild "MyProject.sln" /p:Configuration=<conf> /p:Platform=<platform>
+    $ <vcvars-cmd> && msbuild "MyProject.sln" /p:Configuration=<configuration> /p:Platform=<platform>
 
 Where:
 
 - ``<vcvars-cmd>`` calls the Visual Studio prompt that matches the current recipe ``settings``.
-- ``<conf>`` is the configuration, typically ``Release``, or ``Debug``, which is obtained from ``settings.build_type``,
-  but this is configurable.
+- ``configuration``, typically Release, Debug, which will be obtained from ``settings.build_type``
+  but this can be customized with the ``build_type`` attribute.
 - ``<platform>`` is the architecture, a mapping from the ``settings.arch`` to the common 'x86', 'x64', 'ARM', 'ARM64'.
+  This can be customized with the ``platform`` attribute.
 
 
 Customization
 ---------------
 
+attributes
+++++++++++
+
+You can customize the following attributes in case you need to change them:
+
+- **build_type** (default ``settings.build_type``): Value for the ``/p:Configuration``.
+- **platform** (default based on ``settings.arch`` to select one of these values: (``'x86', 'x64', 'ARM', 'ARM64'``):
+  Value for the ``/p:Platform``.
+
+Example:
+
+.. code:: python
+
+    from conan import ConanFile
+    from conan.tools.microsoft import MSBuild
+    class App(ConanFile):
+        settings = "os", "arch", "compiler", "build_type"
+        def build(self):
+            msbuild = MSBuild(self)
+            msbuild.build_type = "MyRelease"
+            msbuild.platform = "MyPlatform"
+            msbuild.build("MyProject.sln")
+
+
 conf
 ++++