imcontextsimple: Convert docs

gtk/gtkimcontextsimple.c

@@ -36,15 +36,14 @@
 #include "gdk/gdkprofilerprivate.h"
 
 /**
- * SECTION:gtkimcontextsimple
- * @Short_description: An input method context supporting table-based input methods
- * @Title: GtkIMContextSimple
+ * GtkIMContextSimple:
  *
- * GtkIMContextSimple is a simple input method context supporting table-based
- * input methods. It has a built-in table of compose sequences that is derived
- * from the X11 Compose files.
+ * `GtkIMContextSimple` is an input method supporting table-based input methods.
  *
- * GtkIMContextSimple reads additional compose sequences from the first of the
+ * `GtkIMContextSimple` has a built-in table of compose sequences that is
+ * derived from the X11 Compose files.
+ *
+ * `GtkIMContextSimple` reads additional compose sequences from the first of the
  * following files that is found: ~/.config/gtk-4.0/Compose, ~/.XCompose,
  * /usr/share/X11/locale/$locale/Compose (for locales that have a nontrivial
  * Compose file). The syntax of these files is described in the Compose(5)
@@ -52,10 +51,15 @@
  *
  * ## Unicode characters
  *
- * GtkIMContextSimple also supports numeric entry of Unicode characters
- * by typing Ctrl-Shift-u, followed by a hexadecimal Unicode codepoint.
- * For example, Ctrl-Shift-u 1 2 3 Enter yields U+0123 LATIN SMALL LETTER
- * G WITH CEDILLA, i.e. ģ.
+ * `GtkIMContextSimple` also supports numeric entry of Unicode characters
+ * by typing <kbd>Ctrl</kbd>-<kbd>Shift</kbd>-<kbd>u</kbd>, followed by a
+ * hexadecimal Unicode codepoint.
+ *
+ * For example,
+ *
+ *     Ctrl-Shift-u 1 2 3 Enter
+ *
+ * yields U+0123 LATIN SMALL LETTER G WITH CEDILLA, i.e. ģ.
  */
 
 struct _GtkIMContextSimplePrivate