循环滚动修复几处小逻辑问题；更新 README (滚动转换改为循环转换，字符串转换改为变量转换)

package.json

@@ -1,7 +1,7 @@
 {
   "name": "variable-conversion",
   "displayName": "Variable Conversion",
-  "description": "一个强大的变量名转换插件，支持右键菜单、快捷键、底栏等多种方式使用，支持小驼峰、大驼峰(帕斯卡)、下划线(蛇形)、中划线(连字符/脊柱式)、空格分隔、全小写、全大写等常用命名方式(及组合)转换。 \nA powerful variable naming conversion extension. You can use it through the editer menu, shortcut keys and bottom bar. Support camel, pascal, snake, kebab(spinal), space, lower, upper case, and more.",
+  "description": "一个强大的变量名转换插件，支持右键菜单、快捷键、状态栏等多种方式使用，支持小驼峰、大驼峰(帕斯卡)、下划线(蛇形)、中划线(连字符/脊柱式)、空格分隔、全小写、全大写等常用命名方式(及组合)转换。 \nA powerful variable naming conversion extension. You can use it through the editer menu, shortcut keys and bottom bar. Support camel, pascal, snake, kebab(spinal), space, lower, upper case, and more.",
   "version": "1.0.8",
   "icon": "image/logo.png",
   "publisher": "coder-xiaomo",
@@ -57,7 +57,7 @@
     "commands": [
       {
         "command": "variable-conversion.convertCase",
-        "title": "字符串转换"
+        "title": "变量转换"
       },
       {
         "command": "variable-conversion.toCamelCase",
@@ -207,7 +207,7 @@
     "submenus": [
       {
         "id": "variable-conversion.stringConversionMenu",
-        "label": "将字符串转换为..."
+        "label": "将变量转换为..."
       }
     ]
   },