Merge rust-bitcoin#5007: chore: fix some minor typos in code comments

94bb345 chore: small typo (sashass1315)
78b52a1 Update unsigned.rs (sashass1315)
9db8430 chore: fix small typo (sashass1315)
650b0cc chore: fix small typo (sashass1315)

Pull request description:

  These form -> These forms
  Sanity check than -> Sanity check that
  No need to used -> No need to use
  is case -> in case


ACKs for top commit:
  apoelstra:
    ACK 94bb345; successfully ran local tests


Tree-SHA512: 650be9d348d6fea860e51e469ece580811584c9a1fefa60e1802ec607490b9d9f4188b88e01f2e1318e7a75ca2647c3cfd5d8883fa2bb9205011840483fe9a6e

Author: apoelstra

units/src/amount/mod.rs

@@ -146,7 +146,7 @@ impl Denomination {
     }
 }
 
-/// These form are ambiguous and could have many meanings.  For example, M could denote Mega or Milli.
+/// These forms are ambiguous and could have many meanings.  For example, M could denote Mega or Milli.
 /// If any of these forms are used, an error type `PossiblyConfusingDenomination` is returned.
 const CONFUSING_FORMS: [&str; 6] = ["CBTC", "Cbtc", "MBTC", "Mbtc", "UBTC", "Ubtc"];
 

units/src/amount/tests.rs

@@ -1150,7 +1150,7 @@ fn check_const() {
     assert_eq!(Amount::MAX.to_sat() as i64, SignedAmount::MAX.to_sat());
 }
 
-// Sanity check than stdlib supports the set of reference combinations for the ops we want.
+// Sanity check that stdlib supports the set of reference combinations for the ops we want.
 #[test]
 #[allow(clippy::op_ref)] // We are explicitly testing the references work with ops.
 fn sanity_all_ops() {

units/src/amount/unsigned.rs

@@ -463,7 +463,7 @@ impl Amount {
 
         // Mul by 1,000 because we use per/kwu.
         if let Some(sats) = self.to_sat().checked_mul(1_000) {
-            // No need to used checked arithmetic because wu is non-zero.
+            // No need to use checked arithmetic because wu is non-zero.
             if let Some(bump) = sats.checked_add(wu - 1) {
                 let fee_rate = bump / wu;
                 if let Ok(amount) = Amount::from_sat(fee_rate) {

units/src/fee_rate/mod.rs

@@ -146,7 +146,7 @@ impl FeeRate {
 
     /// Checked addition.
     ///
-    /// Computes `self + rhs` returning [`None`] is case of overflow.
+    /// Computes `self + rhs` returning [`None`] in case of overflow.
     #[must_use]
     pub const fn checked_add(self, rhs: FeeRate) -> Option<Self> {
         // No `map()` in const context.