[Web] Uppercase "rename" in en and de

data/web/lang/lang.de.json

@@ -959,7 +959,7 @@
     "fido2": {
         "set_fn": "Benutzerfreundlichen Namen konfigurieren",
         "fn": "Benutzerfreundlicher Name",
-        "rename": "umbenennen",
+        "rename": "Umbenennen",
         "confirm": "Bestätigen",
         "register_status": "Registrierungsstatus",
         "known_ids": "Bekannte IDs",

data/web/lang/lang.en.json

@@ -957,7 +957,7 @@
     "fido2": {
         "set_fn": "Set friendly name",
         "fn": "Friendly name",
-        "rename": "rename",
+        "rename": "Rename",
         "confirm": "Confirm",
         "register_status": "Registration status",
         "known_ids": "Known IDs",