Fix JavaDoc warning

The JavaDoc generation reported the following warning:

  .../EmailReviewCommentsExecutor.java:29: warning - Tag @link:
    reference not found: EmailReviewComments

Change-Id: If30a0e08ccbcea0ee55d208cc2dc6840c4dab00e
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
(cherry picked from commit a5d2ad3933bd021d6a5a947642bf14bcfd1b998b)

gerrit-server/src/main/java/com/google/gerrit/server/change/EmailReviewComments.java

diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/change/EmailReviewComments.java b/gerrit-server/src/main/java/com/google/gerrit/server/change/EmailReviewComments.java
index eea2f48..e37eede 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/change/EmailReviewComments.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/change/EmailReviewComments.java
@@ -43,7 +43,7 @@
 import java.util.Comparator;
 import java.util.List;
 
-class EmailReviewComments implements Runnable, RequestContext {
+public class EmailReviewComments implements Runnable, RequestContext {
   private static final Logger log = LoggerFactory.getLogger(EmailReviewComments.class);
 
   interface Factory {

gerrit-server/src/main/java/com/google/gerrit/server/git/EmailReviewCommentsExecutor.java

diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/EmailReviewCommentsExecutor.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/EmailReviewCommentsExecutor.java
index 1581ec48..9ad0dfc 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/EmailReviewCommentsExecutor.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/EmailReviewCommentsExecutor.java
@@ -16,6 +16,7 @@
 
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
+import com.google.gerrit.server.change.EmailReviewComments;
 import com.google.inject.BindingAnnotation;
 
 import java.lang.annotation.Retention;