Fix a few typos (#341)

Author: striezel

scrypt/CHANGELOG.md

@@ -116,7 +116,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## 0.3.1 (2020-07-03)
 ### Fixed
 - Enable `alloc` feature for `base64`. ([#38])
-- Remove superflous `main()` in documentation ([#40]) 
+- Remove superfluous `main()` in documentation ([#40]) 
 
 [#38]: https://github.com/RustCrypto/password-hashing/pull/38
 [#40]: https://github.com/RustCrypto/password-hashing/pull/40

scrypt/src/lib.rs

@@ -83,7 +83,7 @@ pub use crate::simple::{Scrypt, ALG_ID};
 ///   **WARNING: Make sure to compare this value in constant time!**
 ///
 /// # Return
-/// `Ok(())` if calculation is succesfull and `Err(InvalidOutputLen)` if
+/// `Ok(())` if calculation is successful and `Err(InvalidOutputLen)` if
 /// `output` does not satisfy the following condition:
 /// `output.len() > 0 && output.len() <= (2^32 - 1) * 32`.
 pub fn scrypt(