Standardize capitalization of "NoteDb"

Change-Id: I6b46af64267671cf458de07269bcc5b1f51d6fb0

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

@@ -480,7 +480,7 @@ public class PostReview implements RestModifyView<RevisionResource, ReviewInput>
       }
       ChangeUpdate u = ctx.getUpdate(psId);
       // TODO(dborowitz): Currently doesn't work for PUBLISH_ALL_REVISIONS with
-      // notedb.
+      // NoteDb.
       plcUtil.deleteComments(ctx.getDb(), u, del);
       plcUtil.putComments(ctx.getDb(), u, ups);
       comments.addAll(ups);