Following recommentations, change pr-starfighter to pr_starfighter for ID.

misc/Makefile.am

@@ -4,7 +4,7 @@
 # information. This file is offered as-is, without any warranty.
 
 desktopdir = $(datarootdir)/applications
-desktop_DATA = io.github.pr-starfighter.starfighter.desktop
+desktop_DATA = io.github.pr_starfighter.starfighter.desktop
 
 icondir = $(datarootdir)/pixmaps
 icon_DATA = starfighter.png
@@ -12,4 +12,4 @@ icon_DATA = starfighter.png
 dist_man6_MANS = starfighter.6
 
 appdatadir = $(datarootdir)/metainfo
-appdata_DATA = io.github.pr-starfighter.starfighter.metainfo.xml
+appdata_DATA = io.github.pr_starfighter.starfighter.metainfo.xml

misc/io.github.pr_starfighter.starfighter.metainfo.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop-application">
-  <id>io.github.pr-starfighter.starfighter</id>
+  <id>io.github.pr_starfighter.starfighter</id>
   <metadata_license>BY-SA-4.0</metadata_license>
   <project_license>GPL-3.0-or-later</project_license>
   <name>Project: Starfighter</name>
@@ -19,7 +19,7 @@ corporation which has enslaved the galaxy.
     </p>
   </description>
 
-  <launchable type="desktop-id">io.github.pr-starfighter.starfighter.desktop</launchable>
+  <launchable type="desktop-id">io.github.pr_starfighter.starfighter.desktop</launchable>
 
   <screenshots>
     <screenshot type="default">