fix nits

Author: russcam

src/Nest/Mapping/Visitor/IPropertyVisitor.cs

@@ -61,6 +61,7 @@ public interface IPropertyVisitor
 		void Visit(IFlattenedProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute);
 
 		void Visit(IHistogramProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute);
+
 		void Visit(IConstantKeywordProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute);
 
 		IProperty Visit(PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute);

src/Nest/Mapping/Visitor/NoopPropertyVisitor.cs

@@ -61,6 +61,7 @@ public virtual void Visit(IKeywordProperty type, PropertyInfo propertyInfo, Elas
 		public virtual void Visit(IFlattenedProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute) { }
 
 		public virtual void Visit(IHistogramProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute) { }
+
 		public virtual void Visit(IConstantKeywordProperty type, PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute) { }
 
 		public virtual IProperty Visit(PropertyInfo propertyInfo, ElasticsearchPropertyAttributeBase attribute) => null;