Fix description

Author: jvazquez-r7

modules/exploits/freebsd/http/watchguard_cmd_exec.rb

@@ -18,11 +18,11 @@ def initialize(info = {})
     super(update_info(info,
       'Name'           => 'Watchguard XCS Remote Command Execution',
       'Description'    => %q{
-        This module exploits two seperate vulnerabilities found in the Watchguard XCS virtual appliance
-        to gain command execution. By exploiting an unauthenticated SQL injection vulnerability, a remote attacker may insert
-        a valid web user into the appliance database, and login to the web interface as this user. A
-        vulnerability in the web interface allows the attacker to inject operating system commands as the
-        'nobody' user. The watchguard_local_root module can then be used for local privesc to root.
+        This module exploits two separate vulnerabilities found in the Watchguard XCS virtual
+        appliance to gain command execution. By exploiting an unauthenticated SQL injection, a
+        remote attacker may insert a valid web user into the appliance database, and get access
+        to the web interface. On the other hand, a vulnerability in the web interface allows the
+        attacker to inject operating system commands as the 'nobody' user.
       },
       'Author'         =>
         [