databases/rubygem-activemodel60: Update to 6.0.6

- Update WWW and clean up pkg-descr

Changes:	https://github.com/rails/rails/releases

databases/rubygem-activemodel60/Makefile

 PORTNAME=	activemodel
-PORTVERSION=	6.0.5.1
+PORTVERSION=	6.0.6
 CATEGORIES=	databases rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	60
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Toolkit for building modeling frameworks
-WWW=		https://github.com/rails/rails/tree/main/activemodel
+WWW=		https://github.com/rails/rails/tree/main/activemodel \
+		https://rubyonrails.org/
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
-RUN_DEPENDS=	rubygem-activesupport60>=${PORTVERSION}:devel/rubygem-activesupport60
+RUN_DEPENDS=	rubygem-activesupport60>=${PORTVERSION}<${PORTVERSION}_99:devel/rubygem-activesupport60
 
 USES=		gem
 USE_RUBY=	yes

databases/rubygem-activemodel60/distinfo

-TIMESTAMP = 1657835529
-SHA256 (rubygem/activemodel-6.0.5.1.gem) = bd52230b9bf87b855c198cbb778820b4c72f2b860a07712ceb07a4693da064f3
-SIZE (rubygem/activemodel-6.0.5.1.gem) = 58880
+TIMESTAMP = 1669058207
+SHA256 (rubygem/activemodel-6.0.6.gem) = 42c7968c3f9552dfb57d12993803e9ba2efea5ffe79f3152cd5d7b95b9ed97db
+SIZE (rubygem/activemodel-6.0.6.gem) = 58880

databases/rubygem-activemodel60/pkg-descr

@@ -5,5 +5,3 @@ the Rails framework.
 
 Active Model provides a default module that implements the basic API required to
 integrate with Action Pack out of the box: ActiveModel::Model.
-
-See also: https://rubyonrails.org/