appdata: translate=no properties

It appears that the appstream project no longer supports
`translatable=no` properties, and gettext extract them as translatable.

I opened an issue to inform about the situation, but `translatable=no`
properties are not accepted by developers. You can find the issue
here: `ximion/appstream#623

**Please test your script or string extraction process before merging this PR.**

> In MetaInfo files, each individual paragraph of a description
> (or enumerated entry) is translated individually, however,
> you can only exclude the complete block from being translated
> by adding `translate="no"` to the description element.

Source: https://freedesktop.org/software/appstream/docs/sect-Quickstart-Translation.html

data/im.bernard.Memorado.metainfo.xml.in.in

@@ -2,8 +2,8 @@
 <component type="desktop">
 	<id>@APPID@</id>
   <launchable type="desktop-id">@[email protected]</launchable>
-  <name translatable="no">Memorado</name>
-  <developer_name translatable="no">The Memorado Developers</developer_name>
+  <name translate="no">Memorado</name>
+  <developer_name translate="no">The Memorado Developers</developer_name>
   <update_contact>[email protected]</update_contact>
 	<metadata_license>CC0-1.0</metadata_license>
 	<project_license>GPL-3.0-or-later</project_license>