Added app descriptions (#8)

application.fam

@@ -1,6 +1,7 @@
 App(
     appid="mfkey32",
     name="Mfkey32",
+    description="Mf Classic key finder",
     apptype=FlipperAppType.EXTERNAL,
     targets=["f7"],
     entry_point="mfkey32_main",
@@ -10,7 +11,7 @@ App(
     ],
     stack_size=1 * 1024,
     fap_icon="mfkey.png",
-    fap_category="Nfc",
+    fap_category="NFC",
     fap_author="noproto",
     fap_icon_assets="images",
     fap_weburl="https://github.com/noproto/FlipperMfkey",