Apply suggestions from code review

Co-authored-by: bbhtt <[email protected]>

docs/conventions.rst

@@ -41,7 +41,7 @@ Here are some practical examples of poor ID choices:
 
 - ``org.example.desktop``
 
-  This ID is problematic because the Appstream standard, for legacy reasons,treats IDs ending with
+  This ID is problematic because the Appstream standard, for legacy reasons, treats IDs ending with
   ``.desktop`` as a special case, leading to inconsistency. For the same reason, ``.Desktop`` suffixes
   should not be used for newly named applications. Don't hesitate to repeat the application name
   even if it is already part of the domain name section of the identifier (e.g. ``org.example.Example``).
@@ -88,8 +88,8 @@ reference for providing MetaInfo. You can use the online
 `AppStream MetaInfo Creator <https://www.freedesktop.org/software/appstream/metainfocreator/>`_
 to generate a basic file.
 
-MetaInfo files should be named using the application ID, end with the ``.metainfo.xml``
-file extension, and be placed in ``/app/share/metainfo/``. For example::
+MetaInfo files should be named using the application ID, must end with the ``.metainfo.xml``
+file extension, and must be placed in ``/app/share/metainfo/``. For example::
 
   /app/share/metainfo/org.gnome.Dictionary.metainfo.xml
 
@@ -142,8 +142,8 @@ information about each application. The `Freedesktop specification
 <https://specifications.freedesktop.org/desktop-entry-spec/latest/>`_
 provides a complete reference for writing desktop files.
 
-Desktop files should be named using the application's ID, followed
-by the ``.desktop`` file extension, and should be placed in
+Desktop files must be named using the application's ID, followed
+by the ``.desktop`` file extension, and must be placed in
 ``/app/share/applications/``. For example::
 
   /app/share/applications/org.gnome.Dictionary.desktop
@@ -252,5 +252,5 @@ and later. If your application needs to work on earlier versions of Flatpak, you
 the app will use the correct directory, even after Flatpak is later upgraded to version
 >1.13.
 
-Also note that applications can be configured to use non-default base directory
+Also, note that applications can be configured to use non-default base directory
 locations (see :doc:`sandbox-permissions`).