Update documents and Fixed lint error (#1014)

Author: ota-meshi

docs/rules/component-definition-name-casing.md

@@ -9,9 +9,11 @@ description: enforce specific casing for component definition name
 
 - :wrench: The `--fix` option on the [command line](https://eslint.org/docs/user-guide/command-line-interface#fixing-problems) can automatically fix some of the problems reported by this rule.
 
+Define a style for component definition name casing for consistency purposes.
+
 ## :book: Rule Details
 
-Define a style for component definition name casing for consistency purposes.
+This rule aims to warn the component definition names other than the configured casing.
 
 ## :wrench: Options
 

docs/rules/no-irregular-whitespace.md

@@ -7,6 +7,8 @@ description: disallow irregular whitespace
 # vue/no-irregular-whitespace
 > disallow irregular whitespace
 
+## :book: Rule Details
+
 `vue/no-irregular-whitespace` rule is aimed at catching invalid whitespace that is not a normal tab and space. Some of these characters may cause issues in modern browsers and others will be a debugging issue to spot.
 `vue/no-irregular-whitespace` rule is the similar rule as core [no-irregular-whitespace] rule but it applies to the source code in .vue.
 

lib/rules/attributes-order.js

@@ -19,8 +19,8 @@ const ATTRS = {
   OTHER_DIRECTIVES: 'OTHER_DIRECTIVES',
   OTHER_ATTR: 'OTHER_ATTR',
   EVENTS: 'EVENTS',
-  CONTENT: 'CONTENT',
-};
+  CONTENT: 'CONTENT'
+}
 
 function getAttributeType (attribute, sourceCode) {
   const isBind = attribute.directive && attribute.key.name.name === 'bind'