Update README.md

Author: situx

README.md

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 The dataset [spp_result.ttl](https://github.com/archaeolink/SPP1630Harbours-RDF/blob/main/spp_result.ttl) is a derivative of [Kröger, Lars, Within The Network Of Fluvial Ports : Database (csv)](https://www.db-thueringen.de/receive/dbt_mods_00035241). In: Within The Network Of Fluvial Ports. Jena. 2018. published under a [CC BY-NC-SA 3.0 Licence](http://creativecommons.org/licenses/by-nc-sa/4.0/).
 
-This dataset can be accessed in the following ways:                                                                                                                       
+This dataset can be accessed in the following ways:                                                                                                                        
 * As HTML using the [Github page](https://archaeolink.github.io/SPP1630Harbours-RDF/) of this repository               
 * In QGIS using the static OGC API Features API of this repository: [https://archaeolink.github.io/CIGS_RDF/index.json](https://archaeolink.github.io/SPP1630Harbours-RDF/index.json) [OpenAPI](https://archaeolink.github.io/SPP1630Harbours-RDF/api/api.html)
 * As RDF in JavaScript [SPARQL Interface in JavaScript](https://archaeolink.github.io/SPP1630Harbours-RDF/sparql.html?endpoint=https://archaeolink.github.io/SPP1630Harbours-RDF/index.ttl)