Fix broken links (fix #271)

Author: montyly

book

@@ -1 +1 @@
-Subproject commit 37c09c38519ae5ed1835632926fffb00ef05c830
+Subproject commit 150b745c2d1263673a8c74aa6c6e7ec8dde8f2c8

not-so-smart-contracts/substrate/origins/README.md

@@ -58,6 +58,6 @@ let sender = ensure_signed(origin)?;
 # References
 
 - https://docs.substrate.io/main-docs/build/origins/
-- https://docs.substrate.io/tutorials/work-with-pallets/specify-the-origin-for-a-call/
+- https://docs.substrate.io/tutorials/build-application-logic/specify-the-origin-for-a-call/
 - https://paritytech.github.io/substrate/master/pallet_sudo/index.html#
 - https://paritytech.github.io/substrate/master/pallet_democracy/index.html

not-so-smart-contracts/substrate/validate_unsigned/README.md

@@ -49,5 +49,5 @@ Note that the simplest solution would be to sign the offchain submissions so tha
 - https://docs.substrate.io/main-docs/fundamentals/transaction-types/#unsigned-transactions
 - https://docs.substrate.io/main-docs/fundamentals/offchain-operations/
 - https://github.com/paritytech/substrate/blob/polkadot-v0.9.26/frame/examples/offchain-worker/src/lib.rs
-- https://docs.substrate.io/tutorials/work-with-pallets/add-offchain-workers/
+- https://docs.substrate.io/tutorials/build-application-logic/add-offchain-workers/
 - https://docs.substrate.io/reference/how-to-guides/offchain-workers/offchain-http-requests/