fix(lang): Weblate translation (Sinhala)

Currently translated at 0.8% (3 of 354 strings)

Translation: PeerTube/Android
Translate-URL: https://hosted.weblate.org/projects/peertube/android/si/

app/src/main/res/values-si/strings.xml

@@ -1,2 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources></resources>
+<resources>
+    <string name="title_activity_login">පුරන්න</string>
+    <string name="title_activity_settings">සැකසුම්</string>
+</resources>