chore: clarify dialog strings

dzgui/strings/wizard.py

@@ -66,10 +66,22 @@ label_client = "Steam client"
 
 ### Shortcuts page
 heading_shortcuts = "Create shortcuts"
-blurb_shortcuts = "You can optionally create shortcuts to facilitate launching DZGUI faster. Note that if you create a Steam shortcut, you <b>must restart Steam</b> for these changes to take effect."
+blurb_shortcuts = (
+    "You can optionally create shortcuts to facilitate launching DZGUI faster."
+)
 button_shortcuts = "Create shortcuts"
-checkbox_steam_shortcut = ("Add a shortcut to Steam", "This will not replace or update existing shortcuts.")
-checkbox_start_menu = ("Add a start menu shortcut", "Depends on local window manager settings. Will work on Steam Deck.")
+checkbox_steam_shortcut = (
+    "Add DZGUI to Steam library",
+    (
+        "This creates a standalone copy of DZGUI and adds it to Steam. "
+        "You <b>must restart Steam</b> for the shortcut to appear. This will not replace or update existing shortcuts. "
+        "If you update DZGUI when it is launched via Steam, updates will be applied to the Steam version."
+    ),
+)
+checkbox_start_menu = (
+    "Add a start menu shortcut",
+    "Depends on local window manager settings. Will work on Steam Deck.",
+)
 checkbox_desktop_shortcut = ("Add a desktop shortcut", "Depends on the option above.")
 
 ### Completion page