Update i18n docs

doc/development/i18n/externalization.md

@@ -2,22 +2,21 @@
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10669) in GitLab 9.2.
-For working with internationalization (i18n) we use
-[GNU gettext](https://www.gnu.org/software/gettext/) given it's the most used
-tool for this task and we have a lot of applications that will help us to work
-with it.
+For working with internationalization (i18n),
+[GNU gettext](https://www.gnu.org/software/gettext/) is used given it's the most
+used tool for this task and there are a lot of applications that will help us to
+work with it.
 ## Setting up GitLab Development Kit (GDK)
-In order to be able to work on the [GitLab Community Edition](https://gitlab.com/gitlab-org/gitlab-ce) project we must download and
-configure it through [GDK](https://gitlab.com/gitlab-org/gitlab-development-kit), we can do it by following this [guide](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/set-up-gdk.md).
-Once we have the GitLab project ready we can start working on the
-translation of the project.
+In order to be able to work on the [GitLab Community Edition](https://gitlab.com/gitlab-org/gitlab-ce)
+project you must download and configure it through [GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/set-up-gdk.md).
+Once you have the GitLab project ready, you can start working on the translation.
 ## Tools
-We use a couple of gems:
+The following tools are used:
 1. [`gettext_i18n_rails`](https://github.com/grosser/gettext_i18n_rails): this
    gem allow us to translate content from models, views and controllers. Also

doc/development/i18n/index.md

@@ -13,6 +13,8 @@ Translating strings will help complete and improve each language.
 ## How to contribute
+There are many ways you can contribute in translating GitLab.
+
 ### Externalize strings
 Before a string can be translated, it must be externalized.
@@ -69,6 +71,6 @@ Requests to become a proof reader will be considered on the merits of previous t
 If you would like to be added as a proof reader, please [open an issue](https://gitlab.com/gitlab-org/gitlab-ce/issues).
-### Release
+## Release
 Translations are typically included in the next major or minor release.

doc/development/i18n/translation.md

@@ -4,6 +4,8 @@ For managing the translation process we use [Crowdin](https://crowdin.com).
 ## Using Crowdin
+The first step is to get familiar with Crowdin.
+
 ### Sign In
 To contribute translations at [translate.gitlab.com](https://translate.gitlab.com)
@@ -37,6 +39,8 @@ Remember to **Save** each translation.
 ## Translation Guidelines
+Be sure to check the following guidelines before you translate any strings.
+
 ### Technical terms
 Technical terms should be treated like proper nouns and not be translated.