[libadwaita/wip/exalm/about: 5/5] about-window: Don't trim the last release notes character

[Alexander Mikhaylenko <alexm src gnome org>]

commit 0b61fc89594e2d603c275ff62644f76fe5a67f67
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Jul 8 15:54:58 2022 +0400

    about-window: Don't trim the last release notes character
    
    Originally release notes were going to have 2 line breaks between
    paragraphs. Later it was changed into 1 line break and pixels-above-lines
    on the next line, but the code that trims 2 characters at the end was never
    changed.

 src/adw-about-window.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/adw-about-window.c b/src/adw-about-window.c
index ee06ced6..7fa739a7 100644
--- a/src/adw-about-window.c
+++ b/src/adw-about-window.c
@@ -972,7 +972,8 @@ update_release_notes (AdwAboutWindow *self)
     return;
   }
 
-  gtk_text_iter_backward_chars (&pdata.iter, 2);
+  /* Remove the trailing newline */
+  gtk_text_iter_backward_chars (&pdata.iter, 1);
   gtk_text_buffer_get_end_iter (self->release_notes_buffer, &end_iter);
   gtk_text_buffer_delete (self->release_notes_buffer, &pdata.iter, &end_iter);