Update README.md

Justin Faler · web-flow · commit db2171f4fc3b · 2019-08-18T12:10:05.000-07:00
diff --git a/README.md b/README.md
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 ## Description 
 
-This type of attack is reffered to as a TDoS or Telephony Denial of Service attack.   
+This type of attack is referred to as a TDoS or Telephony Denial of Service attack.   
 
 ## 🎈 Scenarios 
 * Distributed stress testing 
