Typographic fixed to question about null

Author: arialdomartini

README.md

@@ -48,7 +48,7 @@ This project is admittedly inspired by [Front-end Job Interview Questions](https
 * What's the difference between TCP and HTTP?
 * What are the tradeoffs of client-side rendering vs. server-side rendering?
 * How could you develop a reliable communication protocol based on a non-reliable one?
-* [Tony Hoare](https://en.m.wikipedia.org/wiki/Tony_Hoare) who invented the null reference once said "I call it my billion-dollar mistake." since it lead to "innumerable errors, vulnerabilities, and system crashes, which have probably caused a billion dollars of pain and damage in the last forty years". Imagine you want to remove the possibility to have null references in your preferred language: how would you achieve this goal? What consequences could this have?
+* [Tony Hoare](https://en.m.wikipedia.org/wiki/Tony_Hoare) who invented the null reference once said "*I call it my billion-dollar mistake*" since it lead to "*innumerable errors, vulnerabilities, and system crashes, which have probably caused a billion dollars of pain and damage in the last forty years*". Imagine you want to remove the possibility to have null references in your preferred language: how would you achieve this goal? What consequences could this have?
 
 ####[[↑]](#toc) <a name='open'>Open Questions:</a>
 * Why do people resist change?