fix(grumbles) : formatting and spelling nits

Author: niklasad1

Cargo.lock

@@ -324,7 +324,7 @@ impl Manager {
 }
 
 
-impl <'a>Wallet<'a> for Manager {
+impl<'a> Wallet<'a> for Manager {
 	type Error = Error;
 	type Transaction = &'a [u8];
 

hw/src/ledger.rs

@@ -328,9 +328,9 @@ impl HardwareWalletManager {
 
 impl Drop for HardwareWalletManager {
 	fn drop(&mut self) {
-		// Indicate to the USB Hotplug handlers that it
+		// Indicate to the USB Hotplug handler that it
 		// shall terminate but don't wait for it to terminate.
-		// If it don't terminate for some reason USB Hotplug events will be handled
+		// If it doesn't terminate for some reason USB Hotplug events will be handled
 		// even if the HardwareWalletManger has been dropped
 		self.exiting.store(true, atomic::Ordering::Release);
 	}

hw/src/lib.rs

@@ -267,7 +267,7 @@ impl Manager {
 	}
 }
 
-impl <'a>Wallet<'a> for Manager {
+impl<'a> Wallet<'a> for Manager {
 	type Error = Error;
 	type Transaction = &'a TransactionInfo;