removed explicit return in the documentation

doc/manual.txt

@@ -2498,7 +2498,7 @@ different; for this a special setter syntax is needed:
   
   proc host*(s: TSocket): int {.inline.} =
     ## getter of hostAddr
-    return s.FHost
+    s.FHost
 
   var
     s: TSocket

doc/tut2.txt

@@ -126,7 +126,7 @@ The syntax for type conversions is ``destination_type(expression_to_convert)``
 
 .. code-block:: nimrod
   proc getID(x: TPerson): int =
-    return TStudent(x).id
+    TStudent(x).id
 
 The ``EInvalidObjectConversion`` exception is raised if ``x`` is not a
 ``TStudent``.