Distinguish error messaging for mystyped URLs and deleted accounts (#9957)

config/locales/en.yml

@@ -563,8 +563,8 @@ en:
       other: "%{count} people"
   errors:
     '403': You don't have permission to view this page.
-    '404': The page you were looking for doesn't exist.
-    '410': The page you were looking for doesn't exist anymore.
+    '404': The page you are looking for isn't here.
+    '410': The page you were looking for doesn't exist here anymore.
     '422':
       content: Security verification failed. Are you blocking cookies?
       title: Security verification failed
@@ -577,7 +577,7 @@ en:
     archive_takeout:
       date: Date
       download: Download your archive
-      hint_html: You can request an archive of your <strong>toots and uploaded media</strong>. The exported data will be in ActivityPub format, readable by any compliant software. You can request an archive every 7 days.
+      hint_html: You can request an archive of your <strong>toots and uploaded media</strong>. The exported data will be in the ActivityPub format, readable by any compliant software. You can request an archive every 7 days.
       in_progress: Compiling your archive...
       request: Request your archive
       size: Size