Documentation fixes

Sources/ZcashLightClientKit/Synchronizer.swift

@@ -207,7 +207,7 @@ public protocol Synchronizer: AnyObject {
     /// - Parameter toAddress: the recipient's address.
     /// - Parameter memo: an `Optional<Memo>`with the memo to include as part of the transaction. send `nil` when sending to transparent receivers otherwise the function will throw an error
     ///
-    /// If `prepare()` hasn't already been called since creating of synchronizer instance or since the last wipe then this method throws
+    /// If `prepare()` hasn't already been called since creation of the synchronizer instance or since the last wipe then this method throws
     /// `SynchronizerErrors.notPrepared`.
     @available(*, deprecated, message: "Upcoming SDK 2.1 will create multiple transactions at once for some recipients.")
     func sendToAddress(
@@ -220,8 +220,9 @@ public protocol Synchronizer: AnyObject {
     /// Shields transparent funds from the given private key into the best shielded pool of the account associated to the given `UnifiedSpendingKey`.
     /// - Parameter spendingKey: the `UnifiedSpendingKey` that allows to spend transparent funds
     /// - Parameter memo: the optional memo to include as part of the transaction.
+    /// - Parameter shieldingThreshold: the minimum transparent balance required before a transaction will be created.
     ///
-    /// If `prepare()` hasn't already been called since creating of synchronizer instance or since the last wipe then this method throws
+    /// If `prepare()` hasn't already been called since creation of the synchronizer instance or since the last wipe then this method throws
     /// `SynchronizerErrors.notPrepared`.
     @available(*, deprecated, message: "Upcoming SDK 2.1 will create multiple transactions at once for some recipients.")
     func shieldFunds(
@@ -275,7 +276,7 @@ public protocol Synchronizer: AnyObject {
 
     /// Returns the latests UTXOs for the given address from the specified height on
     ///
-    /// If `prepare()` hasn't already been called since creating of synchronizer instance or since the last wipe then this method throws
+    /// If `prepare()` hasn't already been called since creation of the synchronizer instance or since the last wipe then this method throws
     /// `SynchronizerErrors.notPrepared`.
     func refreshUTXOs(address: TransparentAddress, from height: BlockHeight) async throws -> RefreshedUTXOs
 
@@ -299,7 +300,7 @@ public protocol Synchronizer: AnyObject {
     /// `rewind(policy:)` itself doesn't start the sync process when it's done and it doesn't trigger notifications as regorg would. After it is done
     /// you have start the sync process by calling `start()`
     ///
-    /// If `prepare()` hasn't already been called since creating of synchronizer instance or since the last wipe then returned publisher emits
+    /// If `prepare()` hasn't already been called since creation of the synchronizer instance or since the last wipe then returned publisher emits
     /// `SynchronizerErrors.notPrepared` error.
     ///
     /// - Parameter policy: the rewind policy