Fix FloggerLogString issues flagged by error prone

See: [1] for more details.

[1] https://errorprone.info/bugpattern/FloggerLogString

Change-Id: I00bd6fcfdf2084a9d4eae2fff5c677ea1d6fd5df

src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationStateLogger.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationStateLogger.java b/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationStateLogger.java
index 3e73033..a2bcf2b 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationStateLogger.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationStateLogger.java
@@ -31,19 +31,19 @@
   @Override
   public void warn(String msg, ReplicationState... states) {
     stateWriteErr("Warning: " + msg, states);
-    repLog.atWarning().log(msg);
+    repLog.atWarning().log("%s", msg);
   }
 
   @Override
   public void error(String msg, ReplicationState... states) {
     stateWriteErr("Error: " + msg, states);
-    repLog.atSevere().log(msg);
+    repLog.atSevere().log("%s", msg);
   }
 
   @Override
   public void error(String msg, Throwable t, ReplicationState... states) {
     stateWriteErr("Error: " + msg, states);
-    repLog.atSevere().withCause(t).log(msg);
+    repLog.atSevere().withCause(t).log("%s", msg);
   }
 
   private void stateWriteErr(String msg, ReplicationState[] states) {