Update no-dupe-characters-character-class (#191)

* Update `no-dupe-characters-character-class`

* Updated generates files

* More descriptive messages

* Better combination error message

Author: RunDevelopment

README.md

@@ -104,7 +104,7 @@ The rules with the following star :star: are included in the `plugin:regexp/reco
 | [regexp/match-any](https://ota-meshi.github.io/eslint-plugin-regexp/rules/match-any.html) | enforce match any character style | :star::wrench: |
 | [regexp/negation](https://ota-meshi.github.io/eslint-plugin-regexp/rules/negation.html) | enforce use of escapes on negation | :wrench: |
 | [regexp/no-assertion-capturing-group](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-assertion-capturing-group.html) | disallow capturing group that captures assertions. | :star: |
-| [regexp/no-dupe-characters-character-class](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-dupe-characters-character-class.html) | disallow duplicate characters in the RegExp character class | :star: |
+| [regexp/no-dupe-characters-character-class](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-dupe-characters-character-class.html) | disallow duplicate characters in the RegExp character class | :star::wrench: |
 | [regexp/no-dupe-disjunctions](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-dupe-disjunctions.html) | disallow duplicate disjunctions |  |
 | [regexp/no-empty-alternative](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-empty-alternative.html) | disallow alternatives without elements |  |
 | [regexp/no-empty-group](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-empty-group.html) | disallow empty group | :star: |

docs/rules/README.md

@@ -18,7 +18,7 @@ The rules with the following star :star: are included in the `plugin:regexp/reco
 | [regexp/match-any](./match-any.md) | enforce match any character style | :star::wrench: |
 | [regexp/negation](./negation.md) | enforce use of escapes on negation | :wrench: |
 | [regexp/no-assertion-capturing-group](./no-assertion-capturing-group.md) | disallow capturing group that captures assertions. | :star: |
-| [regexp/no-dupe-characters-character-class](./no-dupe-characters-character-class.md) | disallow duplicate characters in the RegExp character class | :star: |
+| [regexp/no-dupe-characters-character-class](./no-dupe-characters-character-class.md) | disallow duplicate characters in the RegExp character class | :star::wrench: |
 | [regexp/no-dupe-disjunctions](./no-dupe-disjunctions.md) | disallow duplicate disjunctions |  |
 | [regexp/no-empty-alternative](./no-empty-alternative.md) | disallow alternatives without elements |  |
 | [regexp/no-empty-group](./no-empty-group.md) | disallow empty group | :star: |

docs/rules/no-dupe-characters-character-class.md

@@ -10,6 +10,7 @@ since: "v0.1.0"
 > disallow duplicate characters in the RegExp character class
 
 - :gear: This rule is included in `"plugin:regexp/recommended"`.
+- :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.
 
 Because multiple same character classes in regular expressions only one is useful, they might be typing mistakes.
 
@@ -21,7 +22,7 @@ var foo = /\\(\\)/;
 
 This rule disallows duplicate characters in the RegExp character class.
 
-<eslint-code-block>
+<eslint-code-block fix>
 
 ```js
 /* eslint regexp/no-dupe-characters-character-class: "error" */