renderer: do not force capitalization of button text

src/renderer/App.vue

@@ -16,4 +16,8 @@ import { DefaultLayout } from './components/layout'
     width: 100%;
     height: 100%
   }
+  /* Do not force capitalization of button text */
+  .v-btn {
+    text-transform: unset !important
+  }
 </style>