feat(ui): board list title verbiage

Author: psychedelicious

invokeai/frontend/web/public/locales/en.json

@@ -39,10 +39,10 @@
         "movingImagesToBoard_other": "Moving {{count}} images to board:",
         "myBoard": "My Board",
         "noMatching": "No matching Boards",
-        "private": "Private",
+        "private": "Private Boards",
         "searchBoard": "Search Boards...",
         "selectBoard": "Select a Board",
-        "shared": "Shared",
+        "shared": "Shared Boards",
         "topMessage": "This board contains images used in the following features:",
         "unarchiveBoard": "Unarchive Board",
         "uncategorized": "Uncategorized",