Fix string.

Author: pengcheng.tan

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

@@ -27,7 +27,7 @@
     <string name="broadcast_connection_description">Use UDP broadcast to connect target device, your device must be in the same network with target device. \nUse system broadcast faster, but some devices do not support.</string>
     <string name="broadcast_connection_local_device">Local Device: %s</string>
     <string name="broadcast_connection_local_ip_address">Local IP Address: %s</string>
-    <string name="broadcast_connection_use_system_broadcast">Use System BroadCast: </string>
+    <string name="broadcast_connection_use_system_broadcast">Use System Broadcast: </string>
     <string name="broadcast_connection_as_receiver">Search Servers</string>
     <string name="broadcast_connection_as_sender">As Server</string>