fix: change app name (#188)

Author: freefony

src/itech_malawi/res/values/strings.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">Itech Malawi</string>
+    <string name="app_name">2WT Retention App</string>
     <string name="app_host">itech-malawi.app.medicmobile.org</string>
 </resources>