Fix calls to logger's log(string)

This is in preparation for Google's PII efforts that are planned later.

Google-Bug-Id: b/209582622
Change-Id: Ia779d4bcc0a6d2238908f164c3befc89a157bf52

java/com/google/gerrit/plugins/checks/rules/ChecksSubmitRule.java

diff --git a/java/com/google/gerrit/plugins/checks/rules/ChecksSubmitRule.java b/java/com/google/gerrit/plugins/checks/rules/ChecksSubmitRule.java
index de6bf49..5e9c2f2 100644
--- a/java/com/google/gerrit/plugins/checks/rules/ChecksSubmitRule.java
+++ b/java/com/google/gerrit/plugins/checks/rules/ChecksSubmitRule.java
@@ -69,7 +69,7 @@
     } catch (RuntimeException e) {
       String errorMessage =
           String.format("failed to load the current patch set of change %s", changeId);
-      logger.atSevere().withCause(e).log(errorMessage);
+      logger.atSevere().withCause(e).log("%s", errorMessage);
       return recordForRuleError(errorMessage);
     }
 
@@ -83,7 +83,7 @@
     } catch (IOException e) {
       String errorMessage =
           String.format("failed to evaluate check states for change %s", changeId);
-      logger.atSevere().withCause(e).log(errorMessage);
+      logger.atSevere().withCause(e).log("%s", errorMessage);
       return recordForRuleError(errorMessage);
     }