documentation: fix table

README.md

@@ -93,6 +93,7 @@ Loaded ontologies and vocabularies:
 | `spdx:licenseId`                       | `spdxLicenseId`         | SPDX: license ID                                                              |
 | `spdx:name`                            | `spdxName`              | SPDX: license full name                                                       |
 | `spdx:licenseText`                     | `spdxLicenseText`       | SPDX: license text                                                            |
+
 <sup>1</sup> Namespace `skos-last-call` is `http://www.w3.org/2008/05/skos#`. It is different from the [standard SKOS namespace](http://www.w3.org/2004/02/skos/core#).
 
 * combined indices (property lists):