Fix appdata error

Author: prateekmedia

.gitignore

@@ -12,7 +12,7 @@
 .*hidden*
 .metadata
 *.keystore
-linux/debian/usr/local/
+linux/packaging/usr/local/
 
 # IntelliJ related
 *.iml

linux/packaging/usr/share/metainfo/flutube.appdata.xml

@@ -14,7 +14,7 @@
 	<url type="homepage">https://github.com/prateekmedia/flutube</url>
 	<description>
 		<p>Youtube video client made using flutter</p>
-		<h4>Features:</h4>
+		<p>Features:</p>
 		<ul>
 			<li>Beautiful user interface</li>
 			<li>Lightweight and fast</li>