Fix typos in docs

See #828

bitcoin/src/amount.rs

@@ -458,7 +458,7 @@ fn fmt_satoshi_in(
 
 /// Amount
 ///
-/// The [Amount] type can be used to express Bitcoin amounts that supports
+/// The [Amount] type can be used to express Bitcoin amounts that support
 /// arithmetic and conversion to various denominations.
 ///
 ///
@@ -802,7 +802,7 @@ enum DisplayStyle {
 
 /// SignedAmount
 ///
-/// The [SignedAmount] type can be used to express Bitcoin amounts that supports
+/// The [SignedAmount] type can be used to express Bitcoin amounts that support
 /// arithmetic and conversion to various denominations.
 ///
 ///

bitcoin/src/blockdata/transaction.rs

@@ -253,7 +253,7 @@ impl TxIn {
     /// might increase more than `TxIn::segwit_weight`. This happens when:
     /// - the new input added causes the input length `VarInt` to increase its encoding length
     /// - the new input is the first segwit input added - this will add an additional 2WU to the
-    /// transaction weight to take into account the segwit marker
+    ///   transaction weight to take into account the segwit marker
     pub fn segwit_weight(&self) -> usize {
         self.legacy_weight() + self.witness.serialized_len()
     }

bitcoin/src/consensus/encode.rs

@@ -159,7 +159,7 @@ pub trait WriteExt : io::Write {
     fn emit_u32(&mut self, v: u32) -> Result<(), io::Error>;
     /// Outputs a 16-bit unsigned integer.
     fn emit_u16(&mut self, v: u16) -> Result<(), io::Error>;
-    /// Outputs a 8-bit unsigned integer.
+    /// Outputs an 8-bit unsigned integer.
     fn emit_u8(&mut self, v: u8) -> Result<(), io::Error>;
 
     /// Outputs a 64-bit signed integer.
@@ -168,7 +168,7 @@ pub trait WriteExt : io::Write {
     fn emit_i32(&mut self, v: i32) -> Result<(), io::Error>;
     /// Outputs a 16-bit signed integer.
     fn emit_i16(&mut self, v: i16) -> Result<(), io::Error>;
-    /// Outputs a 8-bit signed integer.
+    /// Outputs an 8-bit signed integer.
     fn emit_i8(&mut self, v: i8) -> Result<(), io::Error>;
 
     /// Outputs a boolean.
@@ -186,7 +186,7 @@ pub trait ReadExt : io::Read {
     fn read_u32(&mut self) -> Result<u32, Error>;
     /// Reads a 16-bit unsigned integer.
     fn read_u16(&mut self) -> Result<u16, Error>;
-    /// Reads a 8-bit unsigned integer.
+    /// Reads an 8-bit unsigned integer.
     fn read_u8(&mut self) -> Result<u8, Error>;
 
     /// Reads a 64-bit signed integer.
@@ -195,7 +195,7 @@ pub trait ReadExt : io::Read {
     fn read_i32(&mut self) -> Result<i32, Error>;
     /// Reads a 16-bit signed integer.
     fn read_i16(&mut self) -> Result<i16, Error>;
-    /// Reads a 8-bit signed integer.
+    /// Reads an 8-bit signed integer.
     fn read_i8(&mut self) -> Result<i8, Error>;
 
     /// Reads a boolean.

bitcoin/src/network/message.rs

@@ -38,14 +38,14 @@ pub const MAX_MSG_SIZE: usize = 5_000_000;
 pub struct CommandString(Cow<'static, str>);
 
 impl CommandString {
-    /// Convert `&'static str` to `CommandString`
+    /// Converts `&'static str` to `CommandString`
     ///
     /// This is more efficient for string literals than non-static conversions because it avoids
     /// allocation.
     ///
     /// # Errors
     ///
-    /// Returns an error if and only if the string is
+    /// Returns an error if, and only if, the string is
     /// larger than 12 characters in length.
     pub fn try_from_static(s: &'static str) -> Result<CommandString, CommandStringError> {
         Self::try_from_static_cow(s.into())