minor changes

README.md

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 # 🕵️ Introduction
-<img src="https://gitlab.aicrowd.com/aicrowd/practice-challenges/aicrowd_ADCLK_challenge/raw/master/images/adclk.png" width=400 height = 300>
+<img src="https://gitlab.aicrowd.com/aicrowd/practice-challenges/aicrowd_ADCLK_challenge/raw/master/images/adclk.png" width=400 height=300>
 
 
 They popped up when you were browsing, they popped up when you were streaming videos, they popped up when you were playing an intense video game. Did you give in? Did you find those advertisements catchy enough to click!