Update README.md

Author: kudzaiprichard

README.md

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     <img src="images/logo/logo.jpg" alt="Logo" width="80" height="80">
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-  <h3 align="center">Firewall `packet filter`</h3>
+  <h3 align="center">Firewall packet filter</h3>
 
   <p align="center">
     A simple python packet filtering firewall