[ELI5] Tweak wording on the signup screen (#7136)

* Tweak signup wordings

* Update translations

src/locale/locales/de/messages.po

@@ -3742,7 +3742,7 @@ msgstr "Gib dein Passwort ein"
 #~ msgstr ""
 
 #: src/screens/Signup/StepHandle.tsx:114
-msgid "Input your user handle"
+msgid "Type your desired username"
 msgstr "Gib deinen Handle ein"
 
 #: src/view/com/composer/threadgate/ThreadgateBtn.tsx:49
@@ -9663,7 +9663,7 @@ msgid "Your following feed is empty! Follow more users to see what's happening."
 msgstr "Dein Following-Feed ist leer! Folge mehr Benutzern, um auf dem Laufenden zu bleiben."
 
 #: src/screens/Signup/StepHandle.tsx:125
-msgid "Your full handle will be"
+msgid "Your full username will be"
 msgstr "Dein vollständiger Handle lautet"
 
 #: src/screens/Settings/components/ChangeHandleDialog.tsx:219
@@ -9707,5 +9707,5 @@ msgid "Your report will be sent to the Bluesky Moderation Service"
 msgstr ""
 
 #: src/screens/Signup/index.tsx:142
-msgid "Your user handle"
+msgid "Choose your username"
 msgstr "Dein Benutzerhandle"