Add max_description_length constant

scripts/validate/format.py

@@ -18,6 +18,7 @@ index_cors = 4
 
 num_segments = 5
 min_entries_per_category = 3
+max_description_length = 100
 
 anchor_re = re.compile(anchor + '\s(.+)')
 category_title_in_index_re = re.compile('\*\s\[(.*)\]')
@@ -114,7 +115,7 @@ def check_description(line_num: int, description: str) -> List[str]:
         err_msgs.append(err_msg)
 
     desc_length = len(description)
-    if desc_length > 100:
+    if desc_length > max_description_length:
         err_msg = error_message(line_num, f'description should not exceed 100 characters (currently {desc_length})')
         err_msgs.append(err_msg)