Fix message

Author: jvazquez-r7

modules/auxiliary/gather/mybb_db_fingerprint.rb

@@ -48,7 +48,7 @@ def check
     #Check PhP
     php_version = res['X-Powered-By']
     if php_version
-      php_version = "PHP #{php_version}"
+      php_version = "#{php_version}"
     else
       php_version = "PHP version unknown"
     end