Update squad_to_dpr.py (#5689)

Co-authored-by: Stefano Fiorucci <[email protected]>

Author: sudormrfme

haystack/utils/squad_to_dpr.py

@@ -75,7 +75,7 @@
 from haystack.nodes.retriever.base import BaseRetriever
 from haystack.lazy_imports import LazyImport
 
-with LazyImport("Run 'pip instlal farm-haystack[elasticsearch]'") as es_import:
+with LazyImport("Run 'pip install farm-haystack[elasticsearch]'") as es_import:
     from elasticsearch import Elasticsearch