Fixes example service name example consistency

It makes it easier to understand by using the initial example with
`myservice` as service name.

Author: AndreMiras

doc/source/services.rst

@@ -70,8 +70,8 @@ python-for-android creates for each one, as follows::
 
 Here, ``your.package.name`` refers to the package identifier of your
 APK as set by the ``--package`` argument to python-for-android, and
-the name of the service is ``ServiceYourservicename``, in which
-``Yourservicename`` is the identifier passed to the ``--service``
+the name of the service is ``ServiceMyservice``, in which
+``Myservice`` is the identifier passed to the ``--service``
 argument with the first letter upper case. You must also pass the
 ``argument`` parameter even if (as here) it is an empty string. If you
 do pass it, the service can make use of this argument.