Merge rust-bitcoin#4962: fix: correct grammatical errors in example code comments

c09e5ed fix pronoun "the" to "they" in serde.rs comment (sent deed)
7fd9a90 fix missing 'w' in "these two calls" in script.rs (sent deed)

Pull request description:

  - Fix missing `w` in `these two calls` in script.rs
  - Fix pronoun `the` to `they` in serde.rs comment


ACKs for top commit:
  apoelstra:
    ACK c09e5ed; successfully ran local tests


Tree-SHA512: c461b97d5c874d3e7381050d4bbe902b4fcbd41127954ea8110c91edde9675cc38bdf156950d5cec8da26103c239e16ec4b4a01bdf9530b88e6c732591d8a902

Author: apoelstra

bitcoin/examples/script.rs

@@ -65,7 +65,7 @@ fn main() {
     let decoded: WitnessScriptBuf = encode::deserialize_hex(&encoded).unwrap();
     assert_eq!(decoded, script_code);
 
-    // And we can mix these to calls because both include the length prefix.
+    // And we can mix these two calls because both include the length prefix.
     let encoded = encode::serialize_hex(&script_code);
     let decoded = WitnessScriptBuf::from_hex_prefixed(&encoded).unwrap();
     assert_eq!(decoded, script_code);

bitcoin/examples/serde.rs

@@ -19,7 +19,7 @@ pub struct Foo {
 
     /// This works but it's little-endian which may be hard to read.
     ///
-    /// Integer wrapper types are more readable if the explicitly use a unit.
+    /// Integer wrapper types are more readable if they explicitly use a unit.
     #[serde(with = "consensus::serde::With::<Hex>")]
     this: Amount,