Some more doc cleanups

docs/reference/gio/gio-sections.txt

@@ -2066,6 +2066,8 @@ g_zlib_decompressor_get_type
 <TITLE>GFileDescriptorBased</TITLE>
 GFileDescriptorBased
 g_file_descriptor_based_get_fd
+<SUBSECTION Standard>
+GFileDescriptorBaseIFace
 <SUBSECTION Private>
 g_file_descriptor_based_get_type
 G_FILE_DESCRIPTOR_BASED

docs/reference/gobject/gobject-sections.txt

@@ -54,7 +54,6 @@ g_type_class_peek_static
 g_type_class_unref
 g_type_class_peek_parent
 g_type_class_add_private
-g_type_class_get_private
 g_type_add_class_private
 g_type_interface_peek
 g_type_interface_peek_parent
@@ -119,6 +118,7 @@ g_type_check_is_value_type
 g_type_check_value
 g_type_check_value_holds
 g_type_instance_get_private
+g_type_class_get_private
 g_type_test_flags
 g_type_name_from_instance
 g_type_name_from_class

docs/reference/gobject/tmpl/gobject-unused.sgml

@@ -64,6 +64,15 @@ are set for @type.
 @flags:   Bitwise combination of #GTypeFlags and #GTypeFundamentalFlags.
 @Returns: #TRUE if all @flags are set for @type, #FALSE otherwise.
 
+<!-- ##### FUNCTION g_type_class_get_private ##### -->
+<para>
+
+</para>
+
+@klass: 
+@private_type: 
+@Returns: 
+
 <!-- ##### FUNCTION g_type_instance_is_a ##### -->
 <para>
 Determines if @instance adheres to the interface exported