fix: tape margin default value should be 50

!nuf

Author: Miodec

frontend/src/ts/constants/default-config.ts

@@ -101,7 +101,7 @@ const obj = {
   lazyMode: false,
   showAverage: "off",
   tapeMode: "off",
-  tapeMargin: 10,
+  tapeMargin: 50,
   maxLineWidth: 0,
 } as Config;