examples now reference code + sui docs (MystenLabs#4036)

doc/book/src/LINKS.md

@@ -0,0 +1,8 @@
+# Additional Resources
+
+To find out more about Sui Move and its usage, check out these links:
+
+- [Sui Move examples in 'mystenLabs/sui' repo](https://github.com/MystenLabs/sui/tree/main/sui_programmability/examples)
+- [How Sui Move differs from Core Move](https://docs.sui.io/learn/sui-move-diffs)
+- [Why we created Sui Move](https://medium.com/mysten-labs/why-we-created-sui-move-6a234656c36b)
+- [Programming with Objects on Sui](https://docs.sui.io/devnet/build/programming-with-objects)

doc/book/src/SUMMARY.md

@@ -21,4 +21,5 @@
 - [Samples](./samples/README.md)
     - [Make an NFT](./samples/nft.md)
     - [Create a Coin (ERC20)](./samples/coin.md)
+- [Additional Resources](./LINKS.md)
     <!-- - [Make a Character](./samples/character.md) -->

doc/book/src/patterns/hot-potato.md

@@ -5,3 +5,7 @@ Hot Potato is a name for a struct that has no abilities, hence it can only be pa
 ```move
 {{#include ../../examples/sources/patterns/hot-potato.move:4:}}
 ```
+
+This pattern is used in these examples:
+
+- [Flash Loan](https://github.com/MystenLabs/sui/blob/main/sui_programmability/examples/defi/sources/flash_lender.move)

doc/book/src/patterns/witness.md

@@ -5,3 +5,8 @@ Witness is a pattern that is used for confirming the ownership of a type. To do
 ```move
 {{#include ../../examples/sources/patterns/witness.move:4:}}
 ```
+
+This pattern is used in these examples:
+
+- [Liquidity pool](https://github.com/MystenLabs/sui/blob/main/sui_programmability/examples/defi/sources/pool.move)
+- [Regulated coin](https://github.com/MystenLabs/sui/blob/main/sui_programmability/examples/fungible_tokens/sources/regulated_coin.move)