use docs.rs links

steps/18/README.md

@@ -6,7 +6,7 @@ Now that you have learned everything you need to know about `StorageValue`s, it
 
 ## Syntax
 
-Declaring a new [`StorageMap`](https://paritytech.github.io/polkadot-sdk/master/frame_support/storage/types/struct.StorageMap.html) is very similar to a `StorageValue`:
+Declaring a new [`StorageMap`](https://docs.rs/frame-support/37.0.0/frame_support/storage/types/struct.StorageMap.html) is very similar to a `StorageValue`:
 
 ```rust
 #[pallet::storage]

steps/20/README.md

@@ -10,7 +10,7 @@ Check out the [`StorageMap` documentation](https://docs.rs/frame-support/37.0.0/
 
 ### Reading Storage
 
-To read the current value of a key in a `StorageMap`, you can simply call the [`get(key)`](https://paritytech.github.io/polkadot-sdk/master/frame_support/storage/types/struct.StorageMap.html#method.get) API:
+To read the current value of a key in a `StorageMap`, you can simply call the [`get(key)`](https://docs.rs/frame-support/37.0.0/frame_support/storage/types/struct.StorageMap.html#method.get) API:
 
 ```rust
 let my_key: [u8; 32] = [0u8; 32];

steps/40/README.md

@@ -10,7 +10,7 @@ Every blockchain has a cryptocurrency associated with it. Bitcoin has BTC. Ether
 
 For Polkadot, that native token is the DOT token.
 
-Polkadot is built using FRAME and Pallets just like you have been building so far. Included in the `polkadot-sdk` is [`pallet_balances`](https://paritytech.github.io/polkadot-sdk/master/pallet_balances/index.html).
+Polkadot is built using FRAME and Pallets just like you have been building so far. Included in the `polkadot-sdk` is [`pallet_balances`](https://docs.rs/pallet-balances/38.0.0/pallet_balances/index.html).
 
 This is a Pallet designed specifically to manage the native balance for users.
 
@@ -87,8 +87,8 @@ pub trait Config: frame_system::Config {
 
 You can see we introduce a new associated type called `NativeBalance`. We then require that this type must implement two traits:
 
-- [`fungible::Inspect`](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/fungible/trait.Inspect.html): A trait allowing us to read data about a fungible token.
-- [`fungible::Mutate`](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/fungible/trait.Mutate.html): A trait allowing us to write data about a fungible token.
+- [`fungible::Inspect`](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/fungible/trait.Inspect.html): A trait allowing us to read data about a fungible token.
+- [`fungible::Mutate`](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/fungible/trait.Mutate.html): A trait allowing us to write data about a fungible token.
 
 So with this, we are able to access our native balance using APIs like:
 

steps/41/README.md

@@ -87,8 +87,8 @@ pub trait Config: frame_system::Config {
 
 You can see we introduce a new associated type called `NativeBalance`. We then require that this type must implment two traits:
 
-- [`fungible::Inspect`](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/fungible/trait.Inspect.html): A trait allowing us to read data about a fungible token.
-- [`fungible::Mutate`](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/fungible/trait.Mutate.html): A trait allowing us to write data about a fungible token.
+- [`fungible::Inspect`](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/fungible/trait.Inspect.html): A trait allowing us to read data about a fungible token.
+- [`fungible::Mutate`](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/fungible/trait.Mutate.html): A trait allowing us to write data about a fungible token.
 
 So with this, we are able to access our native balance using APIs like:
 

steps/42/README.md

@@ -99,7 +99,7 @@ fn add_one(input: BalanceOf<T>) -> BalanceOf<T> {
 
 Even if we don't include `u128`, we cannot write the line above. This is because that line assumes that `input` must be some specific number type, and in that code, it is simply generic.
 
-However, `BalanceOf<T>` [does have traits](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/trait.Balance.html) that we can use to interact with it. The key one being [`AtLeast32BitUnsigned`](https://paritytech.github.io/polkadot-sdk/master/polkadot_sdk_frame/arithmetic/trait.AtLeast32BitUnsigned.html).
+However, `BalanceOf<T>` [does have traits](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/trait.Balance.html) that we can use to interact with it. The key one being [`AtLeast32BitUnsigned`](https://docs.rs/polkadot-sdk-frame/0.6.0/polkadot_sdk_frame/arithmetic/trait.AtLeast32BitUnsigned.html).
 
 This means our `BalanceOf<T>` must be an unsigned integer, and must be at least `u32`. So it could be `u32`, `u64`, `u128`, or even bigger if you import other crates with those larger unsigned types.
 

steps/43/README.md

@@ -99,7 +99,7 @@ fn add_one(input: BalanceOf<T>) -> BalanceOf<T> {
 
 Even if we don't include `u128`, we cannot write the line above. This is because that line assumes that `input` must be some specific number type, and in that code, it is simply generic.
 
-However, `BalanceOf<T>` [does have traits](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/trait.Balance.html) that we can use to interact with it. The key one being [`AtLeast32BitUnsigned`](https://paritytech.github.io/polkadot-sdk/master/polkadot_sdk_frame/arithmetic/trait.AtLeast32BitUnsigned.html).
+However, `BalanceOf<T>` [does have traits](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/trait.Balance.html) that we can use to interact with it. The key one being [`AtLeast32BitUnsigned`](https://docs.rs/polkadot-sdk-frame/0.6.0/polkadot_sdk_frame/arithmetic/trait.AtLeast32BitUnsigned.html).
 
 This means our `BalanceOf<T>` must be an unsigned integer, and must be at least `u32`. So it could be `u32`, `u64`, `u128`, or even bigger if you import other crates with those larger unsigned types.
 

steps/50/README.md

@@ -23,7 +23,7 @@ To execute a purchase, we need to transfer two things:
 
 ### Transfer the Native Balance
 
-To transfer the `NativeBalance`, you can use the [`transfer`](https://paritytech.github.io/polkadot-sdk/master/frame_support/traits/tokens/fungible/trait.Mutate.html#method.transfer) API which is included in the `fungible::Mutate` trait.
+To transfer the `NativeBalance`, you can use the [`transfer`](https://docs.rs/frame-support/37.0.0/frame_support/traits/tokens/fungible/trait.Mutate.html#method.transfer) API which is included in the `fungible::Mutate` trait.
 
 ```rust
 fn transfer(