doc(chain,esplora): minor documentation improvements

* Corrects an awkward use of the word 'an'
* Adds missing backticks, brackets in a few places

Author: ValuedMammal

crates/chain/src/keychain.rs

@@ -20,7 +20,7 @@ pub use txout_index::*;
 /// Represents updates to the derivation index of a [`KeychainTxOutIndex`].
 /// It maps each keychain `K` to its last revealed index.
 ///
-/// It can be applied to [`KeychainTxOutIndex`] with [`apply_changeset`]. [`ChangeSet] are
+/// It can be applied to [`KeychainTxOutIndex`] with [`apply_changeset`]. [`ChangeSet`]s are
 /// monotone in that they will never decrease the revealed derivation index.
 ///
 /// [`KeychainTxOutIndex`]: crate::keychain::KeychainTxOutIndex

crates/chain/src/tx_graph.rs

@@ -337,7 +337,7 @@ impl<A> TxGraph<A> {
 
     /// The transactions spending from this output.
     ///
-    /// `TxGraph` allows conflicting transactions within the graph. Obviously the transactions in
+    /// [`TxGraph`] allows conflicting transactions within the graph. Obviously the transactions in
     /// the returned set will never be in the same active-chain.
     pub fn outspends(&self, outpoint: OutPoint) -> &HashSet<Txid> {
         self.spends.get(&outpoint).unwrap_or(&self.empty_outspends)

crates/esplora/src/async_ext.rs

@@ -19,7 +19,7 @@ use crate::{anchor_from_status, ASSUME_FINAL_DEPTH};
 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
 #[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 pub trait EsploraAsyncExt {
-    /// Prepare an [`LocalChain`] update with blocks fetched from Esplora.
+    /// Prepare a [`LocalChain`] update with blocks fetched from Esplora.
     ///
     /// * `local_tip` is the previous tip of [`LocalChain::tip`].
     /// * `request_heights` is the block heights that we are interested in fetching from Esplora.

crates/esplora/src/blocking_ext.rs

@@ -17,7 +17,7 @@ use crate::{anchor_from_status, ASSUME_FINAL_DEPTH};
 ///
 /// [crate-level documentation]: crate
 pub trait EsploraExt {
-    /// Prepare an [`LocalChain`] update with blocks fetched from Esplora.
+    /// Prepare a [`LocalChain`] update with blocks fetched from Esplora.
     ///
     /// * `local_tip` is the previous tip of [`LocalChain::tip`].
     /// * `request_heights` is the block heights that we are interested in fetching from Esplora.