lint: Fix inconforming second level unordered list bullet style markup

Signed-off-by: 林博仁(Buo-ren, Lin) <Buo.Ren.Lin@gmail.com>

README.md

@@ -11,9 +11,9 @@ English [中文（台灣）](https://brlin.me/resume/README.zh_TW.html)
 
 * Familiar with the GNU+Linux operating system, including but not limited to daily usage, system administration, software development, and command-line interface operations
 * Familiar with the Git source control management, including but not limited to the following operations:
-    * `git add --patch`
-    * `git rebase --interactive _base_`
-    * `git bisect [start|bad|good|...]`
+    + `git add --patch`
+    + `git rebase --interactive _base_`
+    + `git bisect [start|bad|good|...]`
 * Familiar with F.O.S.S. projects' development process and debugging procedures, including but not limited to triaging, stack trace generation, and bisection
 * Familiar with documentation in manpage and Texinfo formats
 * Familiar with snap packaging, [snaps are universal Linux packages](https://snapcraft.io)

README.zh_TW.md

@@ -11,9 +11,9 @@
 
 * 熟悉 GNU+Linux 作業系統包含但不限於日常使用、系統管理、軟體開發以及命令列界面程式的操作
 * 熟悉使用 Git 版本控制系統，包含但不限於以下操作：
-    * `git add --patch`
-    * `git rebase --interactive _base_`
-    * `git bisect [start|bad|good|...]`
+    + `git add --patch`
+    + `git rebase --interactive _base_`
+    + `git bisect [start|bad|good|...]`
 * 熟悉自由軟體專案的開發流程與除錯方式，包含但不限於議題分類(triaging)、stack trace 的產生以及程式缺陷引入版本的二元搜尋(bisection)
 * 具備 manpage 與 Texinfo 軟體文件的閱讀能力
 * 熟悉 Snap 軟體打包，[Snap 為跨 GNU+Linux 系統的軟體散佈解決方案](https://snapcraft.io)