Fixed Grammatical errors in tutorials.mdx (#9359)

I want to convey my deep appreciation to the creator for their expert
craftsmanship in developing this exceptional application. 👏 The
remarkable dedication to upholding impeccable grammar and spelling in
the documentation significantly enhances the polished and seamless
experience for readers.

I want to stress that your feedback is invaluable to us and is genuinely
cherished.

With gratitude,
@baskaryan, @hwchase17

docs/extras/additional_resources/tutorials.mdx

@@ -42,8 +42,8 @@ Below are links to video tutorials and courses on LangChain. For written guides
 ### [LangChain 101](https://www.youtube.com/playlist?list=PLqZXAkvF1bPNQER9mLmDbntNfSpzdDIU5) by [Greg Kamradt (Data Indy)](https://www.youtube.com/@DataIndependent)
 - [What Is LangChain? - LangChain + `ChatGPT` Overview](https://youtu.be/_v_fgW2SkkQ)
 - [Quickstart Guide](https://youtu.be/kYRB-vJFy38)
-- [Beginner Guide To 7 Essential Concepts](https://youtu.be/2xxziIWmaSA)
-- [Beginner Guide To 9 Use Cases](https://youtu.be/vGP4pQdCocw)
+- [Beginner's Guide To 7 Essential Concepts](https://youtu.be/2xxziIWmaSA)
+- [Beginner's Guide To 9 Use Cases](https://youtu.be/vGP4pQdCocw)
 - [Agents Overview + Google Searches](https://youtu.be/Jq9Sf68ozk0)
 - [`OpenAI` + `Wolfram Alpha`](https://youtu.be/UijbzCIJ99g)
 - [Ask Questions On Your Custom (or Private) Files](https://youtu.be/EnT-ZTrcPrg)