fix: update notebook link and link in example (#748)

README.md

@@ -28,7 +28,7 @@ pip install --upgrade embedchain
 
 Try out embedchain in your browser:
 
-[![Open in Colab](https://camo.githubusercontent.com/84f0493939e0c4de4e6dbe113251b4bfb5353e57134ffd9fcab6b8714514d4d1/68747470733a2f2f636f6c61622e72657365617263682e676f6f676c652e636f6d2f6173736574732f636f6c61622d62616467652e737667)](https://colab.research.google.com/drive/138lMWhENGeEu7Q1-6lNbNTHGLZXBBz_B?usp=sharing)
+[![Open in Colab](https://camo.githubusercontent.com/84f0493939e0c4de4e6dbe113251b4bfb5353e57134ffd9fcab6b8714514d4d1/68747470733a2f2f636f6c61622e72657365617263682e676f6f676c652e636f6d2f6173736574732f636f6c61622d62616467652e737667)](https://colab.research.google.com/drive/17ON1LPonnXAtLaZEebnOktstB_1cJJmh?usp=sharing)
 
 ## 📖 Documentation
 
@@ -63,7 +63,7 @@ elon_bot = App()
 # Embed online resources
 elon_bot.add("https://en.wikipedia.org/wiki/Elon_Musk")
 elon_bot.add("https://www.forbes.com/profile/elon-musk")
-elon_bot.add("https://www.youtube.com/watch?v=MxZpaJK74Y4")
+elon_bot.add("https://www.youtube.com/watch?v=RcYjXbSJBN8")
 
 # Query the bot
 elon_bot.query("How many companies does Elon Musk run and name those?")