contents: remove repeated sentence in introduction (#261)

contents/introduction.md

@@ -13,7 +13,7 @@ Over 500,000 people have benefitted from this handbook! I have lost count of the
 
 I'm [Yangshun](https://twitter.com/yangshunz), a Senior Software Engineer at Meta/Facebook. In 2017, I was frustrated at my job at Grab, a regional ridehailing company and wanted to break into FAANG but I didn't know how to. After few months of research, studying and practicing, I interviewed at 11 companies and managed to get [9 offers from top tech companies in the Bay Area](https://www.teamblind.com/post/Sharing-my-offer-numbers-from-big-companies-for-your-reference-yNgqUPQR) - Facebook, Google, Airbnb, Palantir, Dropbox, Lyft, and some startups.
 
-It was a tedious process which I don't ever want to go through again. It was a tedious process which I don't ever want to go through again. **I went through that process but with this handbook, you don't have to.** This handbook contains the essence of technical interviewing which will benefit you in your job hunt.
+It was a tedious process which I don't ever want to go through again. **I went through that process but with this handbook, you don't have to.** This handbook contains the essence of technical interviewing which will benefit you in your job hunt.
 
 ## Why would you read this?