fix(README): udpated README to correct GMC typo

Author: limplash

README.md

@@ -3,9 +3,9 @@
 [![unit test](https://github.com/limplash/string-cipher/actions/workflows/unit-test.yml/badge.svg)](https://github.com/limplash/string-cipher/actions/workflows/unit-test.yml)
 [![eslint](https://github.com/limplash/string-cipher/actions/workflows/eslint.yml/badge.svg)](https://github.com/limplash/string-cipher/actions/workflows/eslint.yml)
 
-Simple set of crypto function for encrypting and decrypting UTF-8/ACSII strings. The module uses AES-GMC (128, 192 and 256) bases on Node crypto module.  Solution used is based on this [gist](https://gist.github.com/AndiDittrich/4629e7db04819244e843). By using GMC encryption chiper text is authenticated as well. Base of this module are the make functions that generate desired encrypt and decrypt functions. 
+Simple set of crypto function for encrypting and decrypting UTF-8/ACSII strings. The module uses AES-GCM (128, 192 and 256) bases on Node crypto module.  Solution used is based on this [gist](https://gist.github.com/AndiDittrich/4629e7db04819244e843). By using AES-GCM encryption chiper text is authenticated as well. Base of this module are the make functions that generate desired encrypt and decrypt functions. 
 
-Written in Typescript as an ES6 module, all functions are provided in Sync and Async versions. In order to imporve over all security scheme, user supplied `Password` and random `Salt` is used to drive a key using pbkdf2 (with default iterations of 1, for speed but this can be changed using options). The key length depends on the AES-GMC version (128/192/256 use 16/24/32 bit keys) other values are defaulted to values specified by [RFC 5288](https://tools.ietf.org/html/rfc5288)
+Written in Typescript as an ES6 module, all functions are provided in Sync and Async versions. In order to imporve over all security scheme, user supplied `Password` and random `Salt` is used to drive a key using pbkdf2 (with default iterations of 1, for speed but this can be changed using options). The key length depends on the AES-GCM version (128/192/256 use 16/24/32 bit keys) other values are defaulted to values specified by [RFC 5288](https://tools.ietf.org/html/rfc5288)
 
 ## Contents