avoid bad filter

Author: wchen-r7

documentation/modules/exploit/multi/http/caidao_php_backdoor_exec.md

@@ -9,8 +9,8 @@ Here is the [PHP code](https://github.com/rapid7/metasploit-framework/files/4306
   1. Install the application
   2. Start msfconsole
   3. Do: `use exploit/multi/http/caidao_php_backdoor_exec`
-  4. Do: `set rport <port>`
-  5. Do: `set rhost <ip>`
+  4. Do: `set rport port`
+  5. Do: `set rhost ip`
   6. Do: `check`
 ```
 [+] 192.168.1.103:80 - The target is vulnerable.