docs: update documentations (#977)

docs: reworded one line to avoid possible confusions

docs: added small description to defaultContentLanguage

docs: added clarification on defaultContentLanguage parameter

docs: added another line encouraging people to add their own translation file to the GitHub repository.

docs: added Spanish to the language list

exampleSite/content/docs/configuration/multilangual/index.md

@@ -17,7 +17,9 @@ images = []
 navWeight = 960
 +++
 
-HBS supports multiple languages out of box, such as English, Simplified Chinese, Traditional Chinese, French, Russian etc.
+HBS supports multiple languages out of box, such as English, Simplified Chinese, Traditional Chinese, French, Russian, etc.
+
+You can add your own translations on: [hugo-theme-bootstrap/i18n](https://github.com/razonyang/hugo-theme-bootstrap/tree/master/i18n)
 
 <!--more-->
 
@@ -33,7 +35,9 @@ HBS supports multiple languages out of box, such as English, Simplified Chinese,
 
 > You'll need to specify the `languageDirection` as `rtl` for Right-to-left writing languages.
 
-See also [Hugo Multilingual](https://gohugo.io/content-management/multilingual/).
+See also [Hugo Multilingual](https://gohugo.io/content-management/multilingual/).*
+
+> The parameter that controls the default language of the site must be located in the site configuration file. See `defaultContentLanguage` on [Site Configuration](https://hbs.razonyang.com/v1/en/docs/configuration/site/).
 
 ## Localization
 

exampleSite/content/docs/configuration/site/index.md

@@ -27,8 +27,8 @@ The site configuration is located in `config/_default/config.toml` by default.
 |---|:-:|:-:|---
 | `title` | String | - | Site title.
 | `baseURL` | String | - | Site base URL.
-| `copyright` | String | - | Site copyright. The `{year}` placeholder will be replaced with this year.
-| `defaultContentLanguage` | String | `en` |
+| `copyright` | String | - | Site copyright. The `{year}` placeholder will be replaced with the current year.
+| `defaultContentLanguage` | String | `en` | Default site's language.
 | `defaultContentLanguageInSubdir` | Boolean | `false` |
 | `paginate` | Integer | `10` |
 | `paginatePath` | String | `page` |

exampleSite/layouts/shortcodes/code/multilingual-languages.html

@@ -3,6 +3,7 @@
 | English | `en` |
 | Simplified Chinese | `zh-hans`(**Recommended**), `zh-cn` |
 | Traditional Chinese | `zh-hant`(**Recommended**), `zh-tw`, `zh-hk` |
+| Spanish | `es` |
 | Arabic | `ar` |
 | German | `de` |
 | French | `fr` |