Mass fixing of trivial doc bugs. (#63544, #57007, #64141, #63472, #57108,

Mass fixing of trivial doc bugs. (#63544, #57007, #64141, #63472, #57108,

        * gtk/gtkiconfactory.c, gtk/gtktextbuffer.c, gtk/gtktreemodel.c,
        gtk/gtkwindow.c, gtk/gtknotebook.c, gtk/gtkradiobutton.c,
        gtk/gtktextiter.c, gtk/gtkdialog.c: Mass fixing of trivial doc bugs.
        (#63544, #57007, #64141, #63472, #57108, #60818, #61562)

        * gtk/tmpl/gtkaccellabel.sgml, gtk/tmpl/gtkcombo.sgml,
        gtk/tmpl/gtkentry.sgml, gtk/tmpl/gtkhscrollbar.sgml,
        gtk/tmpl/gtkvscrollbar.sgml, gtk/tmpl/gtktoolbar.sgml,
        gtk/tmpl/gtkdialog.sgml, gtk/tmpl/gtkstatusbar.sgml:
        Mass fixing of trivial doc bugs. (#55579, #56760, #58769, #55918,
        #64154, #60422, #54697)