Merge pull request #412 from crystal-ameba/group-documentation-rules

Move documentation-related rules into its own group

spec/ameba/base_spec.cr

@@ -12,6 +12,7 @@ module Ameba::Rule
       it "contains rules across all the available groups" do
         Rule.rules.map(&.group_name).uniq!.reject!(&.empty?).sort.should eq %w(
           Ameba
+          Documentation
           Layout
           Lint
           Metrics

spec/ameba/rule/documentation/documentation_admonition_spec.cr

@@ -1,6 +1,6 @@
 require "../../../spec_helper"
 
-module Ameba::Rule::Lint
+module Ameba::Rule::Documentation
   subject = DocumentationAdmonition.new
 
   describe DocumentationAdmonition do

spec/ameba/rule/documentation/documentation_spec.cr

@@ -1,6 +1,6 @@
 require "../../../spec_helper"
 
-module Ameba::Rule::Lint
+module Ameba::Rule::Documentation
   subject = Documentation.new
     .tap(&.ignore_classes = false)
     .tap(&.ignore_modules = false)