[glibmm] Glib::IOChannel docs: Update names of some enum values

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 79ca4a64dbd7dcc59b2662d5f996f42700b6021a
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Fri Jul 31 15:20:09 2020 +0200

    Glib::IOChannel docs: Update names of some enum values

 glib/src/iochannel.hg | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/glib/src/iochannel.hg b/glib/src/iochannel.hg
index 1a0036ad..0629376c 100644
--- a/glib/src/iochannel.hg
+++ b/glib/src/iochannel.hg
@@ -292,10 +292,10 @@ public:
   _WRAP_METHOD(void set_buffer_size(gsize size), g_io_channel_set_buffer_size)
 
   /** Get the current flags for a IOChannel, including read-only
-   * flags such as Glib::IO_FLAG_IS_READABLE.
+   * flags such as Glib::IOFlags::IS_READABLE.
    *
-   * The values of the flags Glib::IO_FLAG_IS_READABLE and
-   * Glib::IO_FLAG_IS_WRITEABLE are cached for internal use by the channel when
+   * The values of the flags Glib::IOFlags::IS_READABLE and
+   * Glib::IOFlags::IS_WRITEABLE are cached for internal use by the channel when
    * it is created.  If they should change at some later point (e.g. partial
    * shutdown of a socket with the UNIX <tt>shutdown()</tt> function), the user
    * should immediately call get_flags() to update the internal values of these
@@ -337,7 +337,7 @@ public:
 
   /** Returns an IOCondition depending on whether there is data to be
    * read/space to write data in the internal buffers in the I/O channel.
-   * Only the flags Glib::IO_IN and Glib::IO_OUT may be set.
+   * Only the flags Glib::IOCondition::IO_IN and Glib::IOCondition::IO_OUT may be set.
    * @return Bitwise combination of Glib::IOCondition flags.
    */
   _WRAP_METHOD(IOCondition get_buffer_condition() const, g_io_channel_get_buffer_condition)