Remove ODT from the list of supported documents

doc/index.docbook

@@ -65,7 +65,7 @@ Context menu actions like Rename Bookmarks etc.)
 		</para>
 		<para>
 			&okular; supports a lot of different formats like &PDF;, &PostScript;, Tiff, CHM, DjVU, Images (png, jpg, &etc;)
-			XPS, Open Document (ODT), Fiction Books, Comic Book, Plucker, EPub, Fax and Markdown.
+			XPS, Fiction Books, Comic Book, Plucker, EPub, Fax and Markdown.
 			For all supported formats and their features see <ulink url="https://okular.kde.org/formats.php">
 			&okular; Document Format Handlers</ulink>.
 		</para>

[Christopher Yeleighton]

Please update configure-backends.png!

[Yuri Chornoivan]

Done.