docs: Update readme (#803)

- fix typo
- improve text

README.md

@@ -1,14 +1,14 @@
 # GORM for Hibernate 5
 [![Maven Central](https://img.shields.io/maven-central/v/org.grails/grails-datastore-gorm-hibernate5.svg?label=Maven%20Central)](https://central.sonatype.com/artifact/org.grails/grails-datastore-gorm-hibernate5) [![Java CI](https://github.com/grails/gorm-hibernate5/workflows/Java%20CI/badge.svg?event=push)](https://github.com/grails/gorm-hibernate5/actions/workflows/gradle.yml)
 
-This project implements [GORM](https://gorm.grails.org/) for the Hibernate 5.
+This project implements [GORM](https://gorm.grails.org) for the Hibernate 5.
 
 For more information see the following links:
 
 * [Documentation](https://gorm.grails.org/latest/hibernate/manual)
-* [API](https://gorm.grails.org/latest/hibernate/api)
+* [API Reference](https://gorm.grails.org/latest/hibernate/api)
 
 For the current development version see the following links:
 
-* [Snapshot Documentation](https://gorm.grails.org/snapshot/hibernate/manual)
-* [Shapshot API](https://gorm.grails.org/snapshot/hibernate/api)
+* [Development Snapshot Documentation](https://gorm.grails.org/snapshot/hibernate/manual)
+* [Development Snapshot API Reference](https://gorm.grails.org/snapshot/hibernate/api)