DOCS-4192: clean up release texts

Conflicts:
	config/releases.yaml
	source/includes/steps-install-mongodb-enterprise-on-amazon.yaml
	source/includes/steps-install-mongodb-enterprise-on-suse.yaml
	source/includes/steps-install-mongodb-on-linux-32.yaml
	source/includes/steps-install-mongodb-on-linux-64.yaml
	source/includes/steps-install-mongodb-on-osx-manually.yaml