docs: unify config docs

Author: marionebl

@commitlint/config-angular/readme.md

@@ -1,27 +1,15 @@
 > Lint your commits, angular-style
 
-# commitlint-config-angular
+# @commitlint/config-angular
 Shareable `commitlint` config enforcing the angular commit convention.
 
-## Installation
+## Getting started
 
 ```sh
 npm install --save-dev @commitlint/config-angular @commitlint/cli
+echo '{"extends": ["@commitlint/config-angular"]}' > .commitlintrc
 ```
 
-## Usage
-Install and use as `commitlint` shareable config.
-
-```js
-// .commitlintrc
-{
-  "extends": ["angular"]
-}
-```
-
----
-⇨ See [commitlint/shareable-config](../../docs/shareable-config.md) for details
-
 ## Rules
 ### Problems
 
@@ -101,6 +89,3 @@ The following rules are considered warnings for `@commitlint/config-angular` and
 ```js
   eng
 ```
-
----
-⇨ See [commitlint/shareable-config](../../docs/rules.md) for available rules

@commitlint/config-lerna-scopes/readme.md

@@ -3,19 +3,10 @@
 # @commitlint/config-lerna-scopes
 Shareable `commitlint` config enforcing lerna package names as scopes.
 
-## Installation
-
-```shell
+## Getting started
+```sh
 npm install --save-dev @commitlint/config-lerna-scopes @commitlint/cli
-```
-
-## Usage
-Install and use as `commitlint` shareable config.
-```js
-// .commitlintrc
-{
-  "extends": ["angular", "lerna-scopes"]
-}
+echo '{"extends": ["@commitlint/config-lerna-scopes"]}' > .commitlintrc
 ```
 
 ## Examples
@@ -46,9 +37,3 @@ packages
 ⧗   input: chore: do some general maintenance
 ✔   found 0 problems, 0 warnings
 ```
-
----
-⇨ See [commitlint/shareable-config](/marionebl/commitlint/documentation/shareable-config.md) for details
-
----
-Copyright (c) by [Mario Nebl](https://github.com/marionebl) and [contributors](./graphs/contributors). Released under the [MIT license]('./license.md').

@commitlint/config-patternplate/readme.md

@@ -3,25 +3,12 @@
 # @commitlint/config-patternplate
 Shareable `commitlint` config enforcing the patternplate commit convention.
 
-## Installation
-Fetch it with `npm`
-```shell
+## Getting started
+```sh
 npm install --save-dev @commitlint/config-patternplate @commitlint/cli
+echo '{"extends": ["@commitlint/config-patternplate"]}' > .commitlintrc
 ```
 
-
-## Usage
-Install and use as `commitlint` shareable config.
-```js
-// .commitlintrc
-{
-  "extends": ["patternplate"]
-}
-```
-
----
-⇨ See [commitlint/shareable-config](/marionebl/commitlint/documentation/shareable-config.md) for details
-
 ## Rules
 `@commitlint/config-patternplate` extends the [shareable angular config](../config-angular#rules). Additionally these rules apply:
 
@@ -32,9 +19,3 @@ The following rules are considered problems for `@commitlint/config-patterplate`
 * **description**: `scope` is found in `value`
 * **rule**: `always`
 * **value**: determined based on pattern tree. `system` and all pattern ids present in `patterns` are allowed
-
----
-⇨ See [commitlint/shareable-config](/marionebl/commitlint/documentation/rules.md) for available rules
-
----
-Copyright by [Mario Nebl](https://github.com/marionebl) and [contributors](./graphs/contributors). Released under the [MIT license]('./license.md').