Use parameters instead of arguments in rustdocs

The rustdocs use both `# Parameters` and `# Arguments` to mean the same
thing.

Change all of them to `# Parameters` to be consistent.

chacha20_poly1305/src/lib.rs

@@ -75,7 +75,7 @@ impl ChaCha20Poly1305 {
 
     /// Encrypt content in place and return the Poly1305 16-byte authentication tag.
     ///
-    /// # Arguments
+    /// # Parameters
     ///
     /// - `content` - Plaintext to be encrypted in place.
     /// - `aad`     - Optional metadata covered by the authentication tag.
@@ -110,7 +110,7 @@ impl ChaCha20Poly1305 {
 
     /// Decrypt the ciphertext in place if authentication tag is correct.
     ///
-    /// # Arguments
+    /// # Parameters
     ///
     /// - `content` - Ciphertext to be decrypted in place.
     /// - `tag`     - 16-byte authentication tag.

hashes/src/internal_macros.rs

@@ -5,7 +5,8 @@
 /// Adds trait impls to the type called `Hash` in the current scope.
 ///
 /// Implements various conversion traits as well as the [`crate::Hash`] trait.
-/// Arguments:
+///
+/// # Parameters
 ///
 /// * `$bits` - number of bits this hash type has
 /// * `$reverse` - `bool`  - `true` if the hash type should be displayed backwards, `false`
@@ -55,7 +56,7 @@ pub(crate) use hash_trait_impls;
 /// The created type has a single field and will have all standard derives as well as an
 /// implementation of [`crate::Hash`].
 ///
-/// Arguments:
+/// # Parameters
 ///
 /// * `$bits` - the number of bits of the hash type
 /// * `$reverse` - `true` if the hash should be displayed backwards, `false` otherwise

units/src/parse.rs

@@ -139,7 +139,7 @@ fn int<T: Integer, S: AsRef<str> + Into<InputString>>(s: S) -> Result<T, ParseIn
 /// * `TryFrom<Box<str>>`
 /// * `TryFrom<String>`
 ///
-/// # Arguments
+/// # Parameters
 ///
 /// * `to` - the type converted to e.g., `impl From<&str> for $to`.
 /// * `err` - the error type returned by `$inner_fn` (implies returned by `FromStr` and `TryFrom`).
@@ -204,7 +204,7 @@ macro_rules! impl_parse_str_from_int_infallible {
 /// * `TryFrom<Box<str>>`
 /// * `TryFrom<String>`
 ///
-/// # Arguments
+/// # Parameters
 ///
 /// * `to` - the type converted to e.g., `impl From<&str> for $to`.
 /// * `err` - the error type returned by `$inner_fn` (implies returned by `FromStr` and `TryFrom`).