add cross contract calls video / update misc video page

docs/videos/collections-u128-etc.md

@@ -1,33 +1,44 @@
 ---
 id: collections-u128-etc
-title: Miscellaneous video concepts
+title: Miscellaneous video concept
 sidebar_label: Misc
 ---
 
 This page contains videos that explore miscellaneous concepts of smart contract development on NEAR.
 
-## StackOverflow question on NEAR Collections, and dealing with large numbers
-
-<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/wC6CS7js-tc" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
-
-### Content overview
+## Cross-contract calls in Rust
 
-We address this question on StackOverflow:
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube-nocookie.com/embed/971dTz6nM2g"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen>
+</iframe>
 
-https://stackoverflow.com/questions/64378144/why-cant-i-read-this-hashmap-in-a-near-contract/64438703#64438703
-
-Specifically, we talk about why you'll likely want to use NEAR Collections instead of `HashMap` when using Rust.
-
-See a list of the available collections here:
+## StackOverflow question on NEAR Collections, and dealing with large numbers
 
-https://docs.rs/near-sdk/2.0.0/near_sdk/collections/index.html
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube-nocookie.com/embed/wC6CS7js-tc"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen>
+</iframe>
 
-We discuss [`U128`](https://docs.rs/near-sdk/2.0.0/near_sdk/json_types/struct.U128.html) and the difference between the (lowercase) `u128`, and why JSON cannot handle very large numbers.
+Here we address [this question](https://stackoverflow.com/questions/64378144/why-cant-i-read-this-hashmap-in-a-near-contract/64438703#64438703) on StackOverflow and specifically, we'll talk about why you'll likely want to use NEAR Collections instead of `HashMap` when using Rust. See a list of the available collections [here](https://docs.rs/near-sdk/2.0.0/near_sdk/collections/index.html). In this video we discuss:
 
-This video also walks through how to interact with a Rust smart contract using NEAR CLI. We demonstrate logging, `view` and `call` methods, unit tests, the benefit of creating subaccounts, and more.
+- [`U128`](https://docs.rs/near-sdk/2.0.0/near_sdk/json_types/struct.U128.html) and the difference between the (lowercase) `u128`
+- why JSON cannot handle very large numbers
+- how to interact with a Rust smart contract using NEAR CLI
+- demonstrate logging, `view` and `call` methods, and unit tests 
+- benefits of creating subaccounts
 
-Lastly, we walk through the process of writing, building, and deploying a Rust smart contract. Then we'll discover why NEAR subaccounts are useful when you may need to make breaking changes to state.
+We will also walk through the process of writing, building, and deploying a Rust smart contract and then we'll discover why NEAR subaccounts are useful when you may need to make breaking changes to state.
 
 >Got a question?
 <a href="https://stackoverflow.com/questions/tagged/nearprotocol">
-  <h8>Ask it on StackOverflow!</h8></a>
+  <h8>Ask it on StackOverflow!</h8>
+</a>