rules.pl: rename trust decision in UI

Before:
	✓ Trust-2  👍
	✗ Trust-2 👎

After:
	✓ Trusted  👍
	✗ Untrusted 👎

Change-Id: I2773cd3e8a4abfd108b8beec33eaa0aa6dd22442
Reviewed-on: https://go-review.googlesource.com/c/All-Projects/+/255025
Reviewed-by: Andrew Bonventre <andybons@google.com>

rules.pl

diff --git a/rules.pl b/rules.pl
index 4247e63..dc39c0f 100644
--- a/rules.pl
+++ b/rules.pl
@@ -58,8 +58,8 @@
 
 % Check for two trusted author/reviewers, unless Self-Review-OK label set by project.
 trust_filter(Gobot, In, Out) :- has_label('Self-Review-OK', In), !, Out = In.
-trust_filter(Gobot, In, Out) :- trust2, !, Out = [label('Trust-2', ok(Gobot)) | In].
-trust_filter(Gobot, In, Out) :- Out = [label('Trust-2', reject(Gobot)) | In].
+trust_filter(Gobot, In, Out) :- trust2, !, Out = [label('Trusted', ok(Gobot)) | In].
+trust_filter(Gobot, In, Out) :- Out = [label('Untrusted', reject(Gobot)) | In].
 
 trust2 :- trust(U1), trust(U2), U1 \= U2.