fix: Change spelling of "Successful" (#23063)

Before: 
Import Successfull

After:
Import Successful
diff --git a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
index 0b7cff3..2235298 100644
--- a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
+++ b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
@@ -135,7 +135,7 @@
 			callback: function(r) {
 				if(!r.exc) {
 					clearInterval(frm.page["interval"]);
-					frm.page.set_indicator(__('Import Successfull'), 'blue');
+					frm.page.set_indicator(__('Import Successful'), 'blue');
 					create_reset_button(frm);
 				}
 			}