typo 2

Co-authored-by: jheysel-r7 <[email protected]>

Author: sfewer-r7

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

@@ -36,7 +36,7 @@ and `cmd/unix/reverse_bash`.
 
 ### WRITABLE_DIR
 The full path of a writable directory on the target. By default it will be `/var/tmp`. The exploit will write the
-payload as a series if chunks to this location, before executing the payload. The written artifacts are then deleted.
+payload as a series of chunks to this location, before executing the payload. The written artifacts are then deleted.
 
 ## Scenarios