Improve user guide entry (#10939)

* 将点击后会打开用户指南的「帮助」都改为「思源笔记用户指南」

* 修复西班牙语无法打开用户指南

* 去除「思源笔记」

app/appearance/langs/en_US.json

@@ -1058,6 +1058,7 @@
   "parentRelation": "Parent - Child",
   "openInNewTab": "Open in New Tab",
   "help": "Help",
+  "userGuide": "User Guide",
   "paragraphBeginningSpace": "Two empty spaces at the beginning of the paragraph",
   "outline": "Outline",
   "newFile": "New Doc",

app/appearance/langs/es_ES.json

@@ -1058,6 +1058,7 @@
   "parentRelation": "Padre - Hijo",
   "openInNewTab": "Abrir en una nueva pestaña",
   "help": "Ayuda",
+  "userGuide": "User Guide",
   "paragraphBeginningSpace": "Dos espacios vacíos al principio del párrafo",
   "outline": "Esquema",
   "newFile": "Nuevo documento",

app/appearance/langs/fr_FR.json

@@ -1058,6 +1058,7 @@
   "parentRelation": "Parent - Enfant",
   "openInNewTab": "Ouvrir dans un nouvel onglet",
   "help": "Aide",
+  "userGuide": "User Guide",
   "paragraphBeginningSpace": "Deux espaces vides au début du paragraphe",
   "outline": "Outline",
   "newFile": "Nouveau Doc",

app/appearance/langs/zh_CHT.json

@@ -1058,6 +1058,7 @@
   "parentRelation": "父子關係",
   "openInNewTab": "在新分頁中打開",
   "help": "幫助",
+  "userGuide": "用戶指南",
   "paragraphBeginningSpace": "段落開頭空兩格",
   "outline": "大綱",
   "newFile": "新建文檔",

app/appearance/langs/zh_CN.json

@@ -1058,6 +1058,7 @@
   "parentRelation": "父子关系",
   "openInNewTab": "在新页签中打开",
   "help": "帮助",
+  "userGuide": "用户指南",
   "paragraphBeginningSpace": "段落开头空两格",
   "outline": "大纲",
   "newFile": "新建文档",