Fix rubocop linting errors

app/helpers/accounts_helper.rb

@@ -3,26 +3,26 @@ module AccountsHelper
     content = capture(&block)
     render "accounts/summary_card", title: title, content: content
   end
-  
+
   # Format account subtype to be more friendly
   def format_account_subtype(subtype)
     return nil if subtype.nil?
-    
+
     # Mapping of special cases
     special_cases = {
       "ira" => "IRA",
       "401k" => "401(k)",
-      "hsa" => "HSA",
+      "hsa" => "HSA"
     }
-    
+
     # Convert to title case
     subtype_string = subtype.titleize
-    
+
     special_cases.each do |key, value|
       # Use word boundaries to ensure we're replacing whole words
       subtype_string = subtype_string.gsub(/\b#{key}\b/i, value)
     end
-    
+
     subtype_string
   end
 end