[gtkmm-documentation] Update description of some gmmproc macros

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 281f6e44a6bdc1fb42d6424457b0b390e60f421e
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Wed Nov 27 17:25:45 2019 +0100

    Update description of some gmmproc macros
    
    The .hg and .ccg files section: Update the description of _CUSTOM_CTOR_CAST
    and _CUSTOM_MOVE_OPERATIONS.

 docs/tutorial/C/index-in.docbook | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/docs/tutorial/C/index-in.docbook b/docs/tutorial/C/index-in.docbook
index 6f1dd2e..ad146b4 100644
--- a/docs/tutorial/C/index-in.docbook
+++ b/docs/tutorial/C/index-in.docbook
@@ -9689,8 +9689,12 @@ to the wrapped C object in <function>_CLASS_BOXEDTYPE</function> and
 <function>_CLASS_BOXEDTYPE_STATIC</function>.
 </para>
 <para>Suppresses definition of the constructor that takes a pointer to the
-wrapped C object in <function>_CLASS_GOBJECT</function>, <function>_CLASS_GTKOBJECT</function>,
-<function>_CLASS_INTERFACE</function> and <function>_CLASS_OPAQUE_COPYABLE</function>.
+wrapped C object in <function>_CLASS_INTERFACE</function> and
+<function>_CLASS_OPAQUE_COPYABLE</function>.
+</para>
+<para>Suppresses definition of the constructor that takes a pointer to the
+wrapped C object and the constructor that takes construct_params in
+<function>_CLASS_GOBJECT</function> and <function>_CLASS_GTKOBJECT</function>.
 </para>
 </sect3>
 
@@ -9704,7 +9708,8 @@ wrapped C object in <function>_CLASS_GOBJECT</function>, <function>_CLASS_GTKOBJ
 <sect3 id="gmmproc-custom-move-operations">
 <title>_CUSTOM_MOVE_OPERATIONS</title>
 <para>Suppresses declaration and definition of move constructor and move
-assignment operator in <function>_CLASS_GOBJECT</function>.
+assignment operator in <function>_CLASS_GOBJECT</function> and
+<function>_CLASS_GTKOBJECT</function>.
 </para>
 <para>For example:
 <programlisting>