Update block-structure.adoc

Author: LandauRaz

components/Starknet/modules/architecture-and-concepts/pages/network-architecture/block-structure.adoc

@@ -1,9 +1,11 @@
 [id="block_structure"]
-= Block structure
+= Blocks
 
-== Introduction
+== Overview
 
-A Starknet block is a list of transactions and a block header that contains the following fields:
+A Starknet block is a list of transactions and a block header that contains xref:block_header_fields[multiple fields], including the xref:block_hash[hash of the previous block] and a xref:state_diff_commitment[commitment to their state diff], as well as xref:transactions_events_and_receipts_commitments[commitments to the transactions, events, and receipts] it includes.
+
+== Block header fields
 
 [%autowidth]
 |===
@@ -45,7 +47,6 @@ A Starknet block is a list of transactions and a block header that contains the
 
 |===
 
-[#block_hash]
 == Block hash
 
 A block hash is defined by:
@@ -95,7 +96,6 @@ where `h` is the xref:../../cryptography.adoc#poseidon-hash[Poseidon hash functi
 For a reference implementation, see link:https://github.com/starkware-libs/sequencer/blob/bb361ec67396660d5468fd088171913e11482708/crates/starknet_api/src/block_hash/block_hash_calculator.rs#L68[ `block_hash_calculator.rs`] in the Starknet sequencer's GitHub repository
 ====
 
-[#state_diff_hash]
 == State diff commitment
 
 The state diff commitment is defined by:
@@ -124,7 +124,6 @@ Where:
 - `1` and `0` are placeholders that may be used in the future
 - `c~i~,k~i,1~, v~i,1~, ... , k~i,m^i^~,v~i,m^i^~` are `m^i^` updates `(k~i,1~, v~i,1~), ... ,(k~i,m^i^~, v~i,m^i^~)` to contract addresses `c~i~`
 
-[#transactions_events_receipts_commitments]
 == Transactions, events, and receipts commitments
 The commitment to transactions, the commitment to events and the commitment to receipts are all roots of height-64 binary Merkle Patricia tries where the leaf at index `i` corresponds to:
 
@@ -177,4 +176,4 @@ h(
     n,
     from~1~, to~1~, h(len(payload~1~) || payload~1~), ... , from~n~, to~n~, h(len(payload~n~) || payload~n~)
 )
-----
+----