Update pfsense_clickjacking.md

Author: ykoster

documentation/modules/exploit/unix/http/pfsense_clickjacking.md

@@ -11,7 +11,7 @@ The victim should be able to access the WebGUI & must be logged in as admin in o
   1. `use exploit/unix/http/pfsense_clickjacking`
   2. `set TARGETURI https://<ip WebGUI>`
   3. `exploit`
-  4. Browse to the URL return by MSF
+  4. Browse to the URL returned by MSF
   5. Click anywhere on the returned page
   6. Note that a new Meterpreter sessions was started.