Joining the "Historical" category of tasks into the "Reading Comprehension" category

tasks_metadata.json

@@ -315,7 +315,7 @@
     "name": "Historical Relevance Grading",
     "source_url": "https://huggingface.co/datasets/CZLC/history_retrieval",
     "abbreviation": "HIST-IR",
-    "category": "Historical",
+    "category": "Reading Comprehension",
     "short_name": "Czech History IR",
     "metric": "acc"
   },