Update modules/exploits/linux/http/appsmith_rce_cve_2024_55964.rb

Co-authored-by: msutovsky-r7 <[email protected]>

Author: Takahiro-Yoko

modules/exploits/linux/http/appsmith_rce_cve_2024_55964.rb

@@ -66,7 +66,7 @@ def check
       'method' => 'GET',
       'uri' => normalize_uri(target_uri.path, 'applications')
     })
-    return Exploit::CheckCode::Unknown unless res&.code == 200
+    return Exploit::CheckCode::Unknown('Cannot reach server') unless res&.code == 200
 
     html_document = res.get_html_document
     return Exploit::CheckCode::Unknown('Failed to get html document.') if html_document.blank?