From 980365097d44fc8ebb8e0b1327058a59ae62a439 Mon Sep 17 00:00:00 2001
From: "Tobin C. Harding" <me@tobin.cc>
Date: Wed, 14 May 2025 12:31:16 +1000
Subject: [PATCH] Fix expecting string for amount types
MIME-Version: 1.0
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According to the `serde` docs:

> This is used in error messages. The message should complete the
> sentence “This Visitor expects to receive …”, for example the message
> could be “an integer between 0 and 64”. The message should not be
> capitalized and should not end with a period.

Use a lower case character to start the string.
---
 units/src/amount/serde.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/units/src/amount/serde.rs b/units/src/amount/serde.rs
index fc4ca82e3..4be766058 100644
--- a/units/src/amount/serde.rs
+++ b/units/src/amount/serde.rs
@@ -230,7 +230,7 @@ pub mod as_sat {
                 type Value = Option<X>;
 
                 fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    write!(formatter, "An Option<{}64>", X::type_prefix(private::Token))
+                    write!(formatter, "an Option<{}64>", X::type_prefix(private::Token))
                 }
 
                 fn visit_none<E>(self) -> Result<Self::Value, E>
@@ -301,7 +301,7 @@ pub mod as_btc {
                 type Value = Option<X>;
 
                 fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    write!(formatter, "An Option<f64>")
+                    write!(formatter, "an Option<f64>")
                 }
 
                 fn visit_none<E>(self) -> Result<Self::Value, E>
@@ -372,7 +372,7 @@ pub mod as_str {
                 type Value = Option<X>;
 
                 fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    write!(formatter, "An Option<String>")
+                    write!(formatter, "an Option<String>")
                 }
 
                 fn visit_none<E>(self) -> Result<Self::Value, E>