fix wrong website title on lanaguage page

jyangchisyan · jyangchisyan · commit b3ac1892b9df · 2019-07-08T00:07:30.000+08:00
In the serveral language index page, the title shows
"Index| Open Source Guides".

It could cause user confuse so that Index will be replaced by
"Open Source Guides" translation.

Signed-off-by: Samuel Jiang &lt;sam22213228@gmail.com&gt;
diff --git a/_articles/de/index.html b/_articles/de/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: Open Source Guides
 lang: de
 permalink: /de/
 ---
diff --git a/_articles/es/index.html b/_articles/es/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: Guías de código abierto
 lang: es
 permalink: /es/
 ---
diff --git a/_articles/fr/index.html b/_articles/fr/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: Open Source Guides
 lang: fr
 permalink: /fr/
 ---
diff --git a/_articles/id/index.html b/_articles/id/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: Panduan Sumber Terbuka
 lang: id
 permalink: /id/
 ---
diff --git a/_articles/ko/index.html b/_articles/ko/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: 오픈 소스 가이드
 lang: ko
 permalink: /ko/
 ---
diff --git a/_articles/ta/index.html b/_articles/ta/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: திறந்த மூல வழிகாட்டிகள்
 lang: ta
 permalink: /ta/
 ---
diff --git a/_articles/zh-cn/index.html b/_articles/zh-cn/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: 开源软件指南
 lang: zh-cn
 permalink: /zh-cn/
 ---
diff --git a/_articles/zh-tw/index.html b/_articles/zh-tw/index.html
@@ -1,5 +1,6 @@
 ---
 layout: index
+title: 開源軟體指南
 lang: zh-tw
 permalink: /zh-tw/
 ---
