Rename OpenIds => OpenId.

Change-Id: I5d6f1764b07a56a22c883a566e31d2af0abc5736
diff --git a/src/main/java/eu/mulk/mulkcms2/cms/users/OpenId.java b/src/main/java/eu/mulk/mulkcms2/cms/users/OpenId.java
index 0cc7407..a7a391b 100644
--- a/src/main/java/eu/mulk/mulkcms2/cms/users/OpenId.java
+++ b/src/main/java/eu/mulk/mulkcms2/cms/users/OpenId.java
@@ -10,7 +10,7 @@
 import javax.persistence.ManyToOne;
 import javax.persistence.Table;
 
-@Entity
+@Entity(name = "CmsOpenId")
 @Table(name = "openids", schema = "public", catalog = "mulkcms")
 @IdClass(OpenIdPK.class)
 public class OpenId extends PanacheEntityBase {