Update README.md

Fix bot.py address

6-NLP/1-Introduction-to-NLP/README.md

@@ -133,7 +133,7 @@ Let's create the bot next. We'll start by defining some phrases.
     It was nice talking to you, goodbye!
     ```
 
-    One possible solution to the task is [here](../solution/bot.py)
+    One possible solution to the task is [here](solution/bot.py)
 
     ✅ Stop and consider