improve short_description.txt

NullPointerException · NullPointerException · commit db5bf869e8a2 · 2023-01-18T07:35:02.000+08:00
diff --git a/fastlane/metadata/android/en-US/short_description.txt b/fastlane/metadata/android/en-US/short_description.txt
@@ -1 +1 @@
-Alternative Android streaming front-end of Bilibili, NicoNico, Youtube and more.
+An alternative Android streaming front-end of Bilibili, NicoNico, Youtube & more

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-Alternative Android streaming front-end of Bilibili, NicoNico, Youtube and more.`
	`1`	`+An alternative Android streaming front-end of Bilibili, NicoNico, Youtube & more`