Minor fixes

Author: jheysel-r7

documentation/modules/exploit/linux/http/apache_hugegraph_gremlin_rce.md

@@ -9,7 +9,6 @@ To install a vulnerable instance via docker run the following command:
 docker run -itd --name=graph -p 8080:8080 hugegraph/hugegraph:1.0.0
 ```
 
-
 ## Verification Steps
 
 1. Start msfconsole

modules/exploits/linux/http/apache_hugegraph_gremlin_rce.rb

@@ -43,6 +43,10 @@ def initialize(info = {})
         }
       )
     )
+    register_options([
+      Opt::RPORT(8080),
+      OptString.new('TARGETURI', [true, 'Base path to the Apache HugeGraph web application', '/'])
+    ])
   end
 
   def check
@@ -51,7 +55,7 @@ def check
     })
 
     return CheckCode::Unknown('No response from the vulnerable endpoint /gremlin') unless res
-    return CheckCode::Unknown('The response from the vulnerable endpoint /gremlin was not 200') unless res.code == 200
+    return CheckCode::Unknown("The response from the vulnerable endpoint /gremlin was: #{res.code} (expected: 200)") unless res.code == 200
 
     version = res.get_json_document&.dig('version')
     return CheckCode::Unknown('Unable able to determine the version of Apache HugeGraph') unless version
@@ -86,7 +90,7 @@ def exploit
     }
 
     res = send_request_cgi({
-      'uri' => '/gremlin',
+      'uri' => normalize_uri(target_uri.path, '/gremlin'),
       'method' => 'POST',
       'ctype' => 'application/json',
       'data' => data.to_json