fix escaping in regular expression
diff --git a/src/main/resources/SLING-CONTENT/apps/sling/validation/models/model1.json b/src/main/resources/SLING-CONTENT/apps/sling/validation/models/model1.json
index c568966..47e9c87 100644
--- a/src/main/resources/SLING-CONTENT/apps/sling/validation/models/model1.json
+++ b/src/main/resources/SLING-CONTENT/apps/sling/validation/models/model1.json
@@ -14,7 +14,7 @@
                 "jcr:primaryType" : "nt:unstructured",
                 "org.apache.sling.validation.core.RegexValidator": {
                     "jcr:primaryType" : "nt:unstructured",
-                    "validatorArguments" : ["regex=^\\\p{Upper}+$"],
+                    "validatorArguments" : ["regex=^\\p{Upper}+$"],
                     "severity" : "10"
                 }
             }