fix typo

Author: BKreisel

README.md

@@ -1,7 +1,7 @@
 # sqlmap Websocket Proxy
 💉Tool to enable blind sql injection attacks against websockets using sqlmap
 
-Heavily based on an execllent writeup from Rayhan Ahmed: [Automating Blind SQL injection over WebSocket](https://rayhan0x01.github.io/ctf/2021/04/02/blind-sqli-over-websocket-automation.html)
+Heavily based on an excellent writeup from Rayhan Ahmed: [Automating Blind SQL injection over WebSocket](https://rayhan0x01.github.io/ctf/2021/04/02/blind-sqli-over-websocket-automation.html)
 
 ## Example
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