chore(docs): Update README.md

README.md

@@ -18,16 +18,16 @@ Opening a page from bookmarks and histories.
 Custom search engined
 Setting keymaps by a JSON-format configuration.
 
-For usage and more detailed information, check out our [documentation][].
+For usage and more detailed information, check out our [documentations][].
 The development of Vimmatic is publically available as open-source software.
-Feel free to contact us at [github repository][github_repository].
+Feel free to contact us at [github repository][].
 
 
 ## Install
 
 | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/firefox/firefox_48x48.png" alt="Firefox" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br/>Firefox | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/chrome/chrome_48x48.png" alt="Chrome" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br/>Chrome |
 | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| Not published yet                                                                                                                                                                                                 | [Get an extension (experimental support)][Get_chrome]                                                                                                                                                                                                |
+| [Get an add-on][get_firefox]                                                                                                                                                                                      | [Get an extension (experimental support)][get_chrome]                                                                                                                                                         |
 
 ## Copyright
 
@@ -37,7 +37,7 @@ Copyright © Shin'ya Ueoka and contributors
 
 MIT
 
-[Get_firefox]: https://addons.mozilla.org/en-US/firefox/addon/vimmatic/
-[Get_chrome]: https://chrome.google.com/webstore/detail/vimmatic/pghmfgnakhjiphmlcnhfpgopkcjhiedc
+[get_firefox]: https://addons.mozilla.org/en-US/firefox/addon/vimmatic/
+[get_chrome]: https://chrome.google.com/webstore/detail/vimmatic/pghmfgnakhjiphmlcnhfpgopkcjhiedc
 [documentations]: https://ueokande.github.io/vimmatic/
-[github.com repository]: https://github.com/ueokande/vimmatic
+[github repository]: https://github.com/ueokande/vimmatic