add reference to entity-fishing

Readme.md

@@ -78,7 +78,9 @@ A series of additional modules have been developed for performing __structure aw
 - [grobid-dictionaries](https://github.com/MedKhem/grobid-dictionaries): structuring dictionaries in raw PDF format
 - [grobid-superconductors](https://github.com/lfoppiano/grobid-superconductors): recognition of superconductor material and properties in scientific literature
 
-GROBID uses optionnally Deep Learning models relying on the following library: [DeLFT](https://github.com/kermitt2/delft)
+[entity-fishing]((https://github.com/kermitt2/entity-fishing), a tool for extracting Wikidata entities from text and document, can also use Grobid to pre-process scientific articles in PDF, leading to more precise and relevant entity extraction and the capacity to annotate the PDF with interative layout. 
+
+GROBID uses Deep Learning models relying on the following library: [DeLFT](https://github.com/kermitt2/delft)
 
 ## Release and changes