[gimp-web] content: more consistent language naming

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit d3a825ca52303b2c9a61f450afcc50362e9d529a
Author: Anders Jonsson <anders jonsson norsjovallen se>
Date:   Sat Feb 19 12:31:49 2022 +0100

    content: more consistent language naming
    
    Fixes #232

 content/docs/index.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/content/docs/index.md b/content/docs/index.md
index 62a63bb2..3749a292 100644
--- a/content/docs/index.md
+++ b/content/docs/index.md
@@ -13,17 +13,17 @@ The user manual for the GIMP 2.10 release is available in 15 languages and more
 *   [中文 (Chinese Simplified)](https://docs.gimp.org/2.10/zh_CN)
 *   [Dansk](https://docs.gimp.org/2.10/da)
 *   [Deutsch](https://docs.gimp.org/2.10/de/)
-*   [Ελληνικά](https://docs.gimp.org/2.10/el/)
+*   [Ελληνικά (Greek)](https://docs.gimp.org/2.10/el/)
 *   [English](https://docs.gimp.org/2.10/en/)
 *   [Español](https://docs.gimp.org/2.10/es/)
 *   [Français](https://docs.gimp.org/2.10/fr/)
 *   [Italiano](https://docs.gimp.org/2.10/it/)
-*   [日本語(Japanese)](https://docs.gimp.org/2.10/ja/)
-*   [한국어(Korean)](https://docs.gimp.org/2.10/ko/)
+*   [日本語 (Japanese)](https://docs.gimp.org/2.10/ja/)
+*   [한국어 (Korean)](https://docs.gimp.org/2.10/ko/)
 *   [Nederlands](https://docs.gimp.org/2.10/nl/)
-*   [Norwegian Nynorsk](https://docs.gimp.org/2.10/nn/)
+*   [Norsk nynorsk](https://docs.gimp.org/2.10/nn/)
 *   [Português](https://docs.gimp.org/2.10/pt_BR)
-*   [Pусский](https://docs.gimp.org/2.10/ru/)
+*   [Pусский (Russian)](https://docs.gimp.org/2.10/ru/)
 
 The user manuals for older releases can be found at the [GIMP Documentation page][].