Update translations/en.py

translations/en.py

@@ -353,7 +353,7 @@ NLP_MODEL = 'en_core_web_lg'
 ####
 GRAPH_LABELS = {
     'concept_network': "Relationships between key concepts",
-    'concept_centrality': "Concept Centrality",
+    'concept_centrality': "Centrality of key concepts",
     'entity_relations': "Entity Relationships",
     'topic_relations': "Topic Relationships"
 }