Fix missing quote in admin-import property types section (#1422)

Author: fbiville

modules/ROOT/pages/tools/neo4j-admin/neo4j-admin-import.adoc

@@ -940,7 +940,7 @@ carrieanne,"Trinity",tt0242653,ACTED_IN
 For properties, the `<name>` part of the field designates the property key, while the `<field_type>` part assigns a data type.
 You can have properties in both node data files and relationship data files.
 
-Use one of `int`, `long`, `float`, `double`, `boolean`, `byte`, `short`, `char`, `string`, `point`, `date`, `localtime`, `time`, `localdatetime`, datetime`, and `duration` to designate the data type for properties.
+Use one of `int`, `long`, `float`, `double`, `boolean`, `byte`, `short`, `char`, `string`, `point`, `date`, `localtime`, `time`, `localdatetime`, `datetime`, and `duration` to designate the data type for properties.
 By default, types (except arrays) are converted to Cypher types.
 See link:{neo4j-docs-base-uri}/cypher-manual/{page-version}/values-and-types/property-structural-constructed/#_property_types[Cypher Manual -> Property, structural, and constructed values].